java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/loops/terminator_02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:17:53,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:17:53,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:17:53,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:17:53,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:17:53,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:17:53,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:17:53,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:17:53,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:17:53,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:17:53,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:17:53,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:17:53,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:17:53,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:17:53,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:17:53,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:17:53,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:17:53,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:17:53,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:17:53,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:17:53,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:17:53,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:17:53,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:17:53,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:17:53,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:17:53,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:17:53,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:17:53,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:17:53,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:17:53,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:17:53,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:17:53,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:17:53,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:17:53,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:17:53,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:17:53,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:17:53,393 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 [2019-10-13 19:17:53,407 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:17:53,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:17:53,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:17:53,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:17:53,409 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:17:53,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:17:53,409 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:17:53,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:17:53,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:17:53,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:17:53,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:17:53,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:17:53,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:17:53,410 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:17:53,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:17:53,411 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:17:53,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:17:53,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:17:53,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:17:53,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:17:53,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:17:53,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:17:53,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:17:53,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:17:53,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:17:53,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:17:53,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:17:53,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:17:53,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:17:53,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:17:53,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:17:53,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:17:53,706 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:17:53,706 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:17:53,707 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-1.c [2019-10-13 19:17:53,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1df22744/6b09192d23bf4753bae47e939b710243/FLAGabd02ad84 [2019-10-13 19:17:54,250 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:17:54,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-1.c [2019-10-13 19:17:54,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1df22744/6b09192d23bf4753bae47e939b710243/FLAGabd02ad84 [2019-10-13 19:17:54,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1df22744/6b09192d23bf4753bae47e939b710243 [2019-10-13 19:17:54,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:17:54,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:17:54,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:54,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:17:54,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:17:54,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:54,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f51de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54, skipping insertion in model container [2019-10-13 19:17:54,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:54,674 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:17:54,693 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:17:54,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:54,881 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:17:54,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:17:54,910 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:17:54,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54 WrapperNode [2019-10-13 19:17:54,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:17:54,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:17:54,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:17:54,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:17:55,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:55,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:55,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:55,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:55,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:55,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:55,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (1/1) ... [2019-10-13 19:17:55,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:17:55,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:17:55,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:17:55,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:17:55,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (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 [2019-10-13 19:17:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:17:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:17:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:17:55,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:17:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:17:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:17:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:17:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:17:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:17:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:17:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:17:55,247 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:17:55,247 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:17:55,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:55 BoogieIcfgContainer [2019-10-13 19:17:55,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:17:55,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:17:55,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:17:55,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:17:55,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:17:54" (1/3) ... [2019-10-13 19:17:55,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4018706b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:55, skipping insertion in model container [2019-10-13 19:17:55,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:17:54" (2/3) ... [2019-10-13 19:17:55,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4018706b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:17:55, skipping insertion in model container [2019-10-13 19:17:55,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:17:55" (3/3) ... [2019-10-13 19:17:55,271 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2019-10-13 19:17:55,304 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:17:55,321 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:17:55,349 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:17:55,382 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:17:55,383 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:17:55,383 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:17:55,383 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:17:55,383 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:17:55,383 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:17:55,384 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:17:55,384 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:17:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 19:17:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 19:17:55,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:55,403 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:55,404 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:55,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2019-10-13 19:17:55,415 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:55,416 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47931540] [2019-10-13 19:17:55,416 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:55,416 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:55,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:17:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:17:55,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47931540] [2019-10-13 19:17:55,517 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:17:55,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:17:55,518 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956914906] [2019-10-13 19:17:55,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:17:55,521 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:17:55,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:17:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:17:55,534 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-13 19:17:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:17:55,557 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-13 19:17:55,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:17:55,558 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 19:17:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:17:55,566 INFO L225 Difference]: With dead ends: 31 [2019-10-13 19:17:55,566 INFO L226 Difference]: Without dead ends: 12 [2019-10-13 19:17:55,570 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:17:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-13 19:17:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-13 19:17:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-13 19:17:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-10-13 19:17:55,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2019-10-13 19:17:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:17:55,603 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-10-13 19:17:55,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:17:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-10-13 19:17:55,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 19:17:55,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:17:55,605 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:17:55,606 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:17:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:17:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1703094711, now seen corresponding path program 1 times [2019-10-13 19:17:55,607 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:17:55,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862190017] [2019-10-13 19:17:55,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:55,607 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:17:55,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:17:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 19:17:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 19:17:55,655 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-13 19:17:55,655 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-13 19:17:55,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:17:55 BoogieIcfgContainer [2019-10-13 19:17:55,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:17:55,681 INFO L168 Benchmark]: Toolchain (without parser) took 1026.50 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.8 MB in the beginning and 147.4 MB in the end (delta: -44.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:55,682 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:17:55,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.82 ms. Allocated memory is still 145.2 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:55,685 INFO L168 Benchmark]: Boogie Preprocessor took 114.44 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.3 MB in the beginning and 180.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:55,685 INFO L168 Benchmark]: RCFGBuilder took 228.09 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 168.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:55,686 INFO L168 Benchmark]: TraceAbstraction took 423.61 ms. Allocated memory is still 202.4 MB. Free memory was 168.1 MB in the beginning and 147.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:17:55,690 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.82 ms. Allocated memory is still 145.2 MB. Free memory was 102.5 MB in the beginning and 93.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.44 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 93.3 MB in the beginning and 180.6 MB in the end (delta: -87.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 228.09 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 168.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 423.61 ms. Allocated memory is still 202.4 MB. Free memory was 168.1 MB in the beginning and 147.4 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100