/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:22,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:22,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:23,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:44:23,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:44:23,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:44:23,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:44:23,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:44:23,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:44:23,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:44:23,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:44:23,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:44:23,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:44:23,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:44:23,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:44:23,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:44:23,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:44:23,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:23,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:23,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:23,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:44:23,169 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:23,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:23,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:23,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:23,175 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:23,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:23,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:23,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:23,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:23,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:23,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:23,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:23,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:23,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:23,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:23,179 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:23,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:23,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:23,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:23,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:23,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:23,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:23,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:23,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:23,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:23,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:23,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:23,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:23,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:23,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:23,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:23,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:23,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:23,727 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:23,728 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:23,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2020-10-23 18:44:23,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58bb0cdd/ff829c56fa7e4bc881a232b9fcf82a93/FLAG50609e30d [2020-10-23 18:44:24,423 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:24,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2020-10-23 18:44:24,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58bb0cdd/ff829c56fa7e4bc881a232b9fcf82a93/FLAG50609e30d [2020-10-23 18:44:24,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58bb0cdd/ff829c56fa7e4bc881a232b9fcf82a93 [2020-10-23 18:44:24,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:24,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:24,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:24,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:24,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:24,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:24" (1/1) ... [2020-10-23 18:44:24,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1af595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:24, skipping insertion in model container [2020-10-23 18:44:24,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:24" (1/1) ... [2020-10-23 18:44:24,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:24,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:25,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:25,115 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:25,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:25,157 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:25,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25 WrapperNode [2020-10-23 18:44:25,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:25,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:25,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:25,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:25,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (1/1) ... [2020-10-23 18:44:25,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (1/1) ... [2020-10-23 18:44:25,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (1/1) ... [2020-10-23 18:44:25,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (1/1) ... [2020-10-23 18:44:25,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (1/1) ... [2020-10-23 18:44:25,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (1/1) ... [2020-10-23 18:44:25,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (1/1) ... [2020-10-23 18:44:25,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:25,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:25,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:25,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:25,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (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 18:44:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:44:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:44:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:44:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:25,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:25,536 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:44:25,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:25 BoogieIcfgContainer [2020-10-23 18:44:25,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:25,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:25,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:25,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:25,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:24" (1/3) ... [2020-10-23 18:44:25,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74765ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:25, skipping insertion in model container [2020-10-23 18:44:25,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:25" (2/3) ... [2020-10-23 18:44:25,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74765ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:25, skipping insertion in model container [2020-10-23 18:44:25,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:25" (3/3) ... [2020-10-23 18:44:25,548 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.i [2020-10-23 18:44:25,562 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:25,567 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:25,585 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:25,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:25,639 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:25,639 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:25,639 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:25,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:25,640 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:25,640 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:25,640 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-23 18:44:25,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-23 18:44:25,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:25,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:25,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:25,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1644595206, now seen corresponding path program 1 times [2020-10-23 18:44:25,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:25,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655459376] [2020-10-23 18:44:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,108 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 18:44:26,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655459376] [2020-10-23 18:44:26,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:26,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 18:44:26,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161028498] [2020-10-23 18:44:26,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:44:26,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:26,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:44:26,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:44:26,135 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 8 states. [2020-10-23 18:44:26,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:26,428 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-10-23 18:44:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:44:26,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-23 18:44:26,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:26,437 INFO L225 Difference]: With dead ends: 39 [2020-10-23 18:44:26,437 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:26,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:44:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:26,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:26,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-10-23 18:44:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:26,470 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:26,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:44:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:26,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:26,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:26,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:26,652 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:44:26,652 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:44:26,652 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:44:26,652 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:44:26,653 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:44:26,653 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:26,653 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:44:26,653 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:26,653 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:26,653 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:26,654 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:26,654 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:26,654 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 18:44:26,654 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:26,654 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:26,654 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:26,655 INFO L270 CegarLoopResult]: At program point L34-1(lines 30 35) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) (and (<= main_~k~0 1) (<= 0 main_~k~0) (= main_~i~0 1))) [2020-10-23 18:44:26,655 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2020-10-23 18:44:26,655 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-23 18:44:26,655 INFO L274 CegarLoopResult]: For program point L30-2(lines 30 35) no Hoare annotation was computed. [2020-10-23 18:44:26,655 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 37) no Hoare annotation was computed. [2020-10-23 18:44:26,655 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 37) no Hoare annotation was computed. [2020-10-23 18:44:26,656 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-10-23 18:44:26,656 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:26,656 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 18:44:26,656 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:26,656 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:44:26,656 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-23 18:44:26,657 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-23 18:44:26,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:26 BoogieIcfgContainer [2020-10-23 18:44:26,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:26,678 INFO L168 Benchmark]: Toolchain (without parser) took 1870.51 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 66.8 MB in the end (delta: 63.2 MB). Peak memory consumption was 63.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:26,679 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:26,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.57 ms. Allocated memory is still 155.2 MB. Free memory was 129.4 MB in the beginning and 120.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:26,681 INFO L168 Benchmark]: Boogie Preprocessor took 53.11 ms. Allocated memory is still 155.2 MB. Free memory was 120.0 MB in the beginning and 118.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:26,682 INFO L168 Benchmark]: RCFGBuilder took 322.71 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 104.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:26,683 INFO L168 Benchmark]: TraceAbstraction took 1134.74 ms. Allocated memory is still 155.2 MB. Free memory was 104.6 MB in the beginning and 66.8 MB in the end (delta: 37.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:26,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.57 ms. Allocated memory is still 155.2 MB. Free memory was 129.4 MB in the beginning and 120.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.11 ms. Allocated memory is still 155.2 MB. Free memory was 120.0 MB in the beginning and 118.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 322.71 ms. Allocated memory is still 155.2 MB. Free memory was 118.4 MB in the beginning and 104.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1134.74 ms. Allocated memory is still 155.2 MB. Free memory was 104.6 MB in the beginning and 66.8 MB in the end (delta: 37.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 30]: Loop Invariant Derived loop invariant: ((2 <= i && i + k <= 2) && 1 <= i + k) || ((k <= 1 && 0 <= k) && i == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 34 SDs, 0 SdLazy, 53 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 14 NumberOfFragments, 72 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...