/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:16:38,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:16:38,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:16:38,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 05:16:38,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:16:38,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:16:38,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:16:38,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:16:38,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:16:38,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:16:38,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:16:38,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:16:38,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:16:38,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:16:38,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:16:38,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:16:38,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:16:38,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:16:38,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:16:38,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:16:38,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:16:38,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:16:38,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:16:38,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:16:38,814 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:16:38,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:16:38,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:16:38,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:16:38,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:16:38,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:16:38,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:16:38,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:16:38,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:16:38,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:16:38,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:16:38,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:16:38,817 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:16:38,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:16:38,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:16:38,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:38,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:16:38,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:16:38,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:16:38,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:16:39,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:16:39,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:16:39,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:16:39,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:16:39,254 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:16:39,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2020-11-07 05:16:39,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f495460cd/319eec3af5f94cedabe39057ec1a179f/FLAG381528be7 [2020-11-07 05:16:39,933 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:16:39,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2020-11-07 05:16:39,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f495460cd/319eec3af5f94cedabe39057ec1a179f/FLAG381528be7 [2020-11-07 05:16:40,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f495460cd/319eec3af5f94cedabe39057ec1a179f [2020-11-07 05:16:40,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:16:40,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:16:40,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:40,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:16:40,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:16:40,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374b485e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40, skipping insertion in model container [2020-11-07 05:16:40,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:16:40,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:16:40,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:40,530 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:16:40,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:40,566 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:16:40,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40 WrapperNode [2020-11-07 05:16:40,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:40,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:16:40,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:16:40,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:16:40,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (1/1) ... [2020-11-07 05:16:40,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:16:40,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:16:40,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:16:40,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:16:40,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (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 [2020-11-07 05:16:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:16:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:16:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:16:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-11-07 05:16:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:16:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:16:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:16:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:16:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:16:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:16:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 05:16:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-11-07 05:16:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:16:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:16:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:16:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:16:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:16:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:16:40,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:16:41,286 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:16:41,286 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:16:41,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:41 BoogieIcfgContainer [2020-11-07 05:16:41,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:16:41,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:16:41,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:16:41,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:16:41,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:16:40" (1/3) ... [2020-11-07 05:16:41,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5c3ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:41, skipping insertion in model container [2020-11-07 05:16:41,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:40" (2/3) ... [2020-11-07 05:16:41,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5c3ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:41, skipping insertion in model container [2020-11-07 05:16:41,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:41" (3/3) ... [2020-11-07 05:16:41,302 INFO L111 eAbstractionObserver]: Analyzing ICFG test11.c [2020-11-07 05:16:41,320 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:16:41,324 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:16:41,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:16:41,377 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:16:41,377 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:16:41,377 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:16:41,377 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:16:41,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:16:41,378 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:16:41,378 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:16:41,378 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:16:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2020-11-07 05:16:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 05:16:41,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:41,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:16:41,417 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:41,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1976764239, now seen corresponding path program 1 times [2020-11-07 05:16:41,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:41,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970759101] [2020-11-07 05:16:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:41,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970759101] [2020-11-07 05:16:41,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:41,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:16:41,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18043581] [2020-11-07 05:16:41,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:16:41,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:42,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:16:42,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:16:42,015 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 6 states. [2020-11-07 05:16:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:42,404 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2020-11-07 05:16:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 05:16:42,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-07 05:16:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:42,416 INFO L225 Difference]: With dead ends: 103 [2020-11-07 05:16:42,416 INFO L226 Difference]: Without dead ends: 65 [2020-11-07 05:16:42,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:16:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-07 05:16:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-07 05:16:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-07 05:16:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-11-07 05:16:42,494 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 49 [2020-11-07 05:16:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:42,496 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-11-07 05:16:42,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:16:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-11-07 05:16:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 05:16:42,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:42,500 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, 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] [2020-11-07 05:16:42,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:16:42,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:42,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1361011459, now seen corresponding path program 1 times [2020-11-07 05:16:42,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:42,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852350809] [2020-11-07 05:16:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:42,812 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-11-07 05:16:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:42,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852350809] [2020-11-07 05:16:42,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:42,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 05:16:42,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64997096] [2020-11-07 05:16:42,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 05:16:42,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:42,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 05:16:42,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 05:16:42,878 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 5 states. [2020-11-07 05:16:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:43,177 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-11-07 05:16:43,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 05:16:43,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-11-07 05:16:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:43,181 INFO L225 Difference]: With dead ends: 82 [2020-11-07 05:16:43,182 INFO L226 Difference]: Without dead ends: 65 [2020-11-07 05:16:43,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:16:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-07 05:16:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-07 05:16:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-07 05:16:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-11-07 05:16:43,222 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 52 [2020-11-07 05:16:43,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:43,223 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-11-07 05:16:43,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 05:16:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-11-07 05:16:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-07 05:16:43,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:43,229 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, 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] [2020-11-07 05:16:43,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 05:16:43,229 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash -863336921, now seen corresponding path program 1 times [2020-11-07 05:16:43,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:43,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120938209] [2020-11-07 05:16:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:43,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:43,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:43,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120938209] [2020-11-07 05:16:43,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:43,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 05:16:43,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308113619] [2020-11-07 05:16:43,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 05:16:43,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:43,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 05:16:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:16:43,443 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 8 states. [2020-11-07 05:16:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:43,693 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-07 05:16:43,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 05:16:43,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-11-07 05:16:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:43,696 INFO L225 Difference]: With dead ends: 68 [2020-11-07 05:16:43,696 INFO L226 Difference]: Without dead ends: 61 [2020-11-07 05:16:43,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-07 05:16:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-07 05:16:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-07 05:16:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-07 05:16:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-11-07 05:16:43,710 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2020-11-07 05:16:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:43,710 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-11-07 05:16:43,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 05:16:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-11-07 05:16:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-07 05:16:43,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:43,712 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, 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, 1] [2020-11-07 05:16:43,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 05:16:43,713 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:43,713 INFO L82 PathProgramCache]: Analyzing trace with hash -395902033, now seen corresponding path program 1 times [2020-11-07 05:16:43,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:43,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599274633] [2020-11-07 05:16:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:43,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:43,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 05:16:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 05:16:43,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599274633] [2020-11-07 05:16:43,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:43,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 05:16:43,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28859873] [2020-11-07 05:16:43,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 05:16:43,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:43,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 05:16:43,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 05:16:43,891 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 6 states. [2020-11-07 05:16:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:44,086 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-11-07 05:16:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 05:16:44,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-11-07 05:16:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:44,087 INFO L225 Difference]: With dead ends: 61 [2020-11-07 05:16:44,087 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:16:44,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-07 05:16:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:16:44,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:16:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:16:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:16:44,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2020-11-07 05:16:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:44,090 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:16:44,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 05:16:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:16:44,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:16:44,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 05:16:44,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:16:45,081 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,082 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,082 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,082 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,082 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,082 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,083 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:16:45,083 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,083 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 05:16:45,083 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,083 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 7) the Hoare annotation is: true [2020-11-07 05:16:45,083 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-11-07 05:16:45,084 INFO L269 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: true [2020-11-07 05:16:45,084 INFO L269 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: true [2020-11-07 05:16:45,084 INFO L269 CegarLoopResult]: At program point L7-2(line 7) the Hoare annotation is: true [2020-11-07 05:16:45,084 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,084 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 05:16:45,084 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:16:45,085 INFO L269 CegarLoopResult]: At program point get_dummyFINAL(lines 9 12) the Hoare annotation is: true [2020-11-07 05:16:45,085 INFO L269 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-11-07 05:16:45,085 INFO L269 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: true [2020-11-07 05:16:45,085 INFO L269 CegarLoopResult]: At program point L11-3(line 11) the Hoare annotation is: true [2020-11-07 05:16:45,085 INFO L269 CegarLoopResult]: At program point get_dummyENTRY(lines 9 12) the Hoare annotation is: true [2020-11-07 05:16:45,085 INFO L269 CegarLoopResult]: At program point L11-4(line 11) the Hoare annotation is: true [2020-11-07 05:16:45,086 INFO L269 CegarLoopResult]: At program point L11-5(line 11) the Hoare annotation is: true [2020-11-07 05:16:45,086 INFO L269 CegarLoopResult]: At program point get_dummyEXIT(lines 9 12) the Hoare annotation is: true [2020-11-07 05:16:45,086 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:16:45,086 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:16:45,086 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 05:16:45,086 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 05:16:45,086 INFO L262 CegarLoopResult]: At program point L27(lines 14 34) the Hoare annotation is: false [2020-11-07 05:16:45,087 INFO L262 CegarLoopResult]: At program point mainEXIT(lines 14 34) the Hoare annotation is: (not (= main_~pc~0.base 0)) [2020-11-07 05:16:45,087 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,087 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,087 INFO L262 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,087 INFO L262 CegarLoopResult]: At program point L19-3(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,088 INFO L262 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2020-11-07 05:16:45,088 INFO L262 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2020-11-07 05:16:45,088 INFO L262 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2020-11-07 05:16:45,088 INFO L262 CegarLoopResult]: At program point L15-3(line 15) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2020-11-07 05:16:45,088 INFO L262 CegarLoopResult]: At program point L15-4(line 15) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2020-11-07 05:16:45,089 INFO L262 CegarLoopResult]: At program point L15-5(line 15) the Hoare annotation is: false [2020-11-07 05:16:45,089 INFO L262 CegarLoopResult]: At program point L15-6(line 15) the Hoare annotation is: false [2020-11-07 05:16:45,089 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: false [2020-11-07 05:16:45,089 INFO L262 CegarLoopResult]: At program point L20(lines 20 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,089 INFO L262 CegarLoopResult]: At program point L20-1(lines 20 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,089 INFO L262 CegarLoopResult]: At program point L20-3(lines 20 23) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,090 INFO L262 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2020-11-07 05:16:45,090 INFO L262 CegarLoopResult]: At program point L20-4(lines 20 21) the Hoare annotation is: false [2020-11-07 05:16:45,090 INFO L262 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2020-11-07 05:16:45,090 INFO L262 CegarLoopResult]: At program point L20-5(lines 20 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,090 INFO L262 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (not (= |main_~#c~0.base| 0)) [2020-11-07 05:16:45,091 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: false [2020-11-07 05:16:45,091 INFO L262 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,091 INFO L262 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= (select (select |#memory_int| |main_~#c~0.base|) |main_~#c~0.offset|) 60) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,091 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,091 INFO L262 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,092 INFO L262 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,092 INFO L262 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,092 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,092 INFO L262 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (and |main_#t~short15| (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,092 INFO L262 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,093 INFO L262 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,093 INFO L262 CegarLoopResult]: At program point L21-6(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,093 INFO L262 CegarLoopResult]: At program point L21-7(line 21) the Hoare annotation is: false [2020-11-07 05:16:45,093 INFO L262 CegarLoopResult]: At program point L21-8(line 21) the Hoare annotation is: false [2020-11-07 05:16:45,093 INFO L262 CegarLoopResult]: At program point mainFINAL(lines 14 34) the Hoare annotation is: (not (= main_~pc~0.base 0)) [2020-11-07 05:16:45,094 INFO L262 CegarLoopResult]: At program point L21-9(line 21) the Hoare annotation is: false [2020-11-07 05:16:45,094 INFO L262 CegarLoopResult]: At program point L21-10(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= |main_#t~mem14| |main_#t~mem13|) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,094 INFO L262 CegarLoopResult]: At program point L21-11(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (not |main_#t~short15|) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,094 INFO L262 CegarLoopResult]: At program point L21-12(line 21) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not |main_#t~short16|) (= |main_#t~mem13| (select (select |#memory_int| main_~pb~0.base) main_~pb~0.offset)) (not (= |main_~#c~0.base| 0)) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,094 INFO L262 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2020-11-07 05:16:45,095 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-11-07 05:16:45,095 INFO L262 CegarLoopResult]: At program point L26(lines 26 28) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (= |main_#t~mem17| 60) (not (= |main_~#c~0.base| 0)) (= (select (select |#memory_int| |main_~#c~0.base|) |main_~#c~0.offset|) 60) (= main_~pa~0.base main_~pb~0.base) (= main_~pb~0.offset main_~pa~0.offset) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,095 INFO L262 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: false [2020-11-07 05:16:45,095 INFO L262 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2020-11-07 05:16:45,095 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,096 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,096 INFO L262 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= |main_~#c~0.base| 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-11-07 05:16:45,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:16:45 BoogieIcfgContainer [2020-11-07 05:16:45,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:16:45,123 INFO L168 Benchmark]: Toolchain (without parser) took 4806.75 ms. Allocated memory was 160.4 MB in the beginning and 209.7 MB in the end (delta: 49.3 MB). Free memory was 136.1 MB in the beginning and 144.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 115.5 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:45,125 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 160.4 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:16:45,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.78 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 126.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:45,129 INFO L168 Benchmark]: Boogie Preprocessor took 38.44 ms. Allocated memory is still 160.4 MB. Free memory was 126.1 MB in the beginning and 124.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:45,131 INFO L168 Benchmark]: RCFGBuilder took 683.75 ms. Allocated memory is still 160.4 MB. Free memory was 124.6 MB in the beginning and 140.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:45,138 INFO L168 Benchmark]: TraceAbstraction took 3825.36 ms. Allocated memory was 160.4 MB in the beginning and 209.7 MB in the end (delta: 49.3 MB). Free memory was 139.7 MB in the beginning and 144.1 MB in the end (delta: -4.4 MB). Peak memory consumption was 117.7 MB. Max. memory is 8.0 GB. [2020-11-07 05:16:45,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 160.4 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.78 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 126.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.44 ms. Allocated memory is still 160.4 MB. Free memory was 126.1 MB in the beginning and 124.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 683.75 ms. Allocated memory is still 160.4 MB. Free memory was 124.6 MB in the beginning and 140.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3825.36 ms. Allocated memory was 160.4 MB in the beginning and 209.7 MB in the end (delta: 49.3 MB). Free memory was 139.7 MB in the beginning and 144.1 MB in the end (delta: -4.4 MB). Peak memory consumption was 117.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for get_dummy Derived contract for procedure get_dummy: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: !(pc == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 227 SDtfs, 167 SDslu, 462 SDs, 0 SdLazy, 414 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 79 LocationsWithAnnotation, 91 PreInvPairs, 108 NumberOfFragments, 659 HoareAnnotationTreeSize, 91 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 79 FomulaSimplificationsInter, 476 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 215 NumberOfCodeBlocks, 215 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 35067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...