/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 21:46:30,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:46:30,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:46:30,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:46:30,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 21:46:30,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 21:46:30,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 21:46:30,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 21:46:30,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 21:46:30,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 21:46:30,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 21:46:30,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 21:46:30,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 21:46:30,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 21:46:30,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 21:46:30,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 21:46:30,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 21:46:30,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 21:46:30,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 21:46:30,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 21:46:30,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 21:46:30,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:46:30,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:46:30,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:46:30,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:46:30,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:46:30,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:46:30,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:46:30,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:46:30,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:46:30,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:46:30,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:46:30,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:46:30,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:46:30,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:46:30,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:46:30,379 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:46:30,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:46:30,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:46:30,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:46:30,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:46:30,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:46:30,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:46:30,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:46:30,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:46:30,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:46:30,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:46:30,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:46:30,757 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:46:30,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2020-10-23 21:46:30,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04199f030/6e8f538f37a840fca61df23a9c38fa39/FLAG309a61852 [2020-10-23 21:46:31,396 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:46:31,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2020-10-23 21:46:31,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04199f030/6e8f538f37a840fca61df23a9c38fa39/FLAG309a61852 [2020-10-23 21:46:31,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04199f030/6e8f538f37a840fca61df23a9c38fa39 [2020-10-23 21:46:31,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:46:31,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:46:31,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:31,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:46:31,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:46:31,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:31" (1/1) ... [2020-10-23 21:46:31,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5158ffdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:31, skipping insertion in model container [2020-10-23 21:46:31,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:46:31" (1/1) ... [2020-10-23 21:46:31,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:46:31,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:46:31,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:31,998 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:46:32,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:46:32,033 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:46:32,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32 WrapperNode [2020-10-23 21:46:32,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:46:32,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:46:32,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:46:32,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:46:32,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (1/1) ... [2020-10-23 21:46:32,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (1/1) ... [2020-10-23 21:46:32,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (1/1) ... [2020-10-23 21:46:32,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (1/1) ... [2020-10-23 21:46:32,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (1/1) ... [2020-10-23 21:46:32,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (1/1) ... [2020-10-23 21:46:32,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (1/1) ... [2020-10-23 21:46:32,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:46:32,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:46:32,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:46:32,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:46:32,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (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 [2020-10-23 21:46:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:46:32,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:46:32,159 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:46:32,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 21:46:32,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 21:46:32,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:46:32,160 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:46:32,160 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:46:32,160 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:46:32,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:46:32,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 21:46:32,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 21:46:32,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:46:32,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-23 21:46:32,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:46:32,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:46:32,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:46:32,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:46:32,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:46:32,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:46:32,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:46:32,446 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:46:32,447 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 21:46:32,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:32 BoogieIcfgContainer [2020-10-23 21:46:32,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:46:32,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:46:32,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:46:32,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:46:32,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:46:31" (1/3) ... [2020-10-23 21:46:32,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94de43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:32, skipping insertion in model container [2020-10-23 21:46:32,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:46:32" (2/3) ... [2020-10-23 21:46:32,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94de43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:46:32, skipping insertion in model container [2020-10-23 21:46:32,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:46:32" (3/3) ... [2020-10-23 21:46:32,458 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2020-10-23 21:46:32,478 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:46:32,489 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:46:32,524 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:46:32,551 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:46:32,551 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:46:32,551 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:46:32,551 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:46:32,551 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:46:32,552 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:46:32,552 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:46:32,552 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:46:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-23 21:46:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 21:46:32,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:32,580 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] [2020-10-23 21:46:32,581 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:32,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:32,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2111385450, now seen corresponding path program 1 times [2020-10-23 21:46:32,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:32,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912618036] [2020-10-23 21:46:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:32,728 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:32,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912618036] [2020-10-23 21:46:32,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:32,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:46:32,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823440392] [2020-10-23 21:46:32,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:46:32,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:32,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:46:32,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:46:32,984 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-23 21:46:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:33,087 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-23 21:46:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:46:33,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-23 21:46:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:33,100 INFO L225 Difference]: With dead ends: 68 [2020-10-23 21:46:33,100 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 21:46:33,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:46:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 21:46:33,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-23 21:46:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-23 21:46:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-10-23 21:46:33,172 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 28 [2020-10-23 21:46:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:33,173 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-10-23 21:46:33,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:46:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-10-23 21:46:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 21:46:33,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:46:33,176 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] [2020-10-23 21:46:33,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:46:33,178 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:46:33,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:46:33,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1582369675, now seen corresponding path program 1 times [2020-10-23 21:46:33,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:46:33,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373116620] [2020-10-23 21:46:33,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:46:33,194 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:46:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:33,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:46:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:46:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:46:33,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373116620] [2020-10-23 21:46:33,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:46:33,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 21:46:33,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302839231] [2020-10-23 21:46:33,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 21:46:33,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:46:33,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 21:46:33,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 21:46:33,496 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 7 states. [2020-10-23 21:46:33,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:46:33,924 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-23 21:46:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 21:46:33,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-23 21:46:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:46:33,925 INFO L225 Difference]: With dead ends: 43 [2020-10-23 21:46:33,925 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 21:46:33,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-23 21:46:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 21:46:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 21:46:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 21:46:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 21:46:33,929 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-10-23 21:46:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:46:33,929 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 21:46:33,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 21:46:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 21:46:33,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 21:46:33,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:46:33,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 21:46:34,428 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,428 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,428 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,428 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,429 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,429 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,429 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:46:34,430 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,430 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 21:46:34,430 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,431 INFO L270 CegarLoopResult]: 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|)) [2020-10-23 21:46:34,431 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,431 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 21:46:34,431 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 21:46:34,432 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 21:46:34,432 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 21:46:34,432 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 21:46:34,434 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 21:46:34,434 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-23 21:46:34,434 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-23 21:46:34,434 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-23 21:46:34,434 INFO L274 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-10-23 21:46:34,434 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-23 21:46:34,435 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 18 40) the Hoare annotation is: true [2020-10-23 21:46:34,435 INFO L277 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-23 21:46:34,435 INFO L277 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-10-23 21:46:34,435 INFO L270 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,435 INFO L270 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,435 INFO L270 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,436 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,436 INFO L270 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,436 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-23 21:46:34,436 INFO L277 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: true [2020-10-23 21:46:34,436 INFO L277 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-10-23 21:46:34,436 INFO L277 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-10-23 21:46:34,436 INFO L277 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-10-23 21:46:34,437 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,437 INFO L270 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,438 INFO L277 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-10-23 21:46:34,439 INFO L270 CegarLoopResult]: At program point L29(lines 29 34) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,439 INFO L277 CegarLoopResult]: At program point L29-2(lines 26 35) the Hoare annotation is: true [2020-10-23 21:46:34,439 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,439 INFO L277 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-10-23 21:46:34,439 INFO L277 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-10-23 21:46:34,439 INFO L277 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true [2020-10-23 21:46:34,440 INFO L277 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: true [2020-10-23 21:46:34,441 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 18 40) the Hoare annotation is: true [2020-10-23 21:46:34,441 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,441 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 18 40) the Hoare annotation is: true [2020-10-23 21:46:34,441 INFO L270 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,441 INFO L270 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-10-23 21:46:34,441 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 35) the Hoare annotation is: (or (<= main_~z~0 100) (<= 100 main_~x~0)) [2020-10-23 21:46:34,442 INFO L277 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-10-23 21:46:34,442 INFO L277 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-10-23 21:46:34,442 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2020-10-23 21:46:34,442 INFO L270 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:46:34,442 INFO L270 CegarLoopResult]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-23 21:46:34,442 INFO L270 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 21:46:34,442 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: true [2020-10-23 21:46:34,443 INFO L277 CegarLoopResult]: At program point L10-2(lines 9 14) the Hoare annotation is: true [2020-10-23 21:46:34,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:46:34 BoogieIcfgContainer [2020-10-23 21:46:34,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:46:34,464 INFO L168 Benchmark]: Toolchain (without parser) took 2697.38 ms. Allocated memory was 153.1 MB in the beginning and 196.1 MB in the end (delta: 43.0 MB). Free memory was 130.2 MB in the beginning and 163.9 MB in the end (delta: -33.7 MB). Peak memory consumption was 84.3 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:34,467 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 126.0 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:46:34,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.11 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 120.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:34,469 INFO L168 Benchmark]: Boogie Preprocessor took 35.41 ms. Allocated memory is still 153.1 MB. Free memory was 120.1 MB in the beginning and 118.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:34,471 INFO L168 Benchmark]: RCFGBuilder took 378.86 ms. Allocated memory is still 153.1 MB. Free memory was 118.6 MB in the beginning and 102.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:34,472 INFO L168 Benchmark]: TraceAbstraction took 2007.41 ms. Allocated memory was 153.1 MB in the beginning and 196.1 MB in the end (delta: 43.0 MB). Free memory was 101.8 MB in the beginning and 163.9 MB in the end (delta: -62.1 MB). Peak memory consumption was 55.9 MB. Max. memory is 8.0 GB. [2020-10-23 21:46:34,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 126.0 MB in the end (delta: 96.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.11 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 120.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.41 ms. Allocated memory is still 153.1 MB. Free memory was 120.1 MB in the beginning and 118.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.86 ms. Allocated memory is still 153.1 MB. Free memory was 118.6 MB in the beginning and 102.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2007.41 ms. Allocated memory was 153.1 MB in the beginning and 196.1 MB in the end (delta: 43.0 MB). Free memory was 101.8 MB in the beginning and 163.9 MB in the end (delta: -62.1 MB). Peak memory consumption was 55.9 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: 26]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 82 SDslu, 58 SDs, 0 SdLazy, 108 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 71 PreInvPairs, 83 NumberOfFragments, 126 HoareAnnotationTreeSize, 71 FomulaSimplifications, 82 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 55 FomulaSimplificationsInter, 1084 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...