/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:48:24,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:48:24,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:48:24,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:48:24,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:48:24,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:48:24,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:48:24,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:48:24,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:48:24,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:48:24,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:48:24,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:48:24,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:48:24,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:48:24,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:48:24,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:48:24,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:48:24,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:48:24,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:48:24,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:48:24,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:48:24,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:48:24,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:48:24,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:48:24,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:48:24,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:48:24,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:48:24,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:48:24,491 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 [2020-07-20 11:48:24,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:48:24,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:48:24,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:48:24,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:48:24,526 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:48:24,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:48:24,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:48:24,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:48:24,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:48:24,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:48:24,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:48:24,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:48:24,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:48:24,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:48:24,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:48:24,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:48:24,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:48:24,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:48:24,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:48:24,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:48:24,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:48:24,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:48:24,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:48:24,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:48:24,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:48:24,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:48:24,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:24,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:48:24,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:48:24,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:48:24,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:48:24,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:48:24,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:48:24,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:48:24,927 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:48:24,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-20 11:48:25,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0c6e3a3/96aca84fe9a04c529a491f471199077e/FLAGc93a21e53 [2020-07-20 11:48:25,528 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:48:25,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-20 11:48:25,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0c6e3a3/96aca84fe9a04c529a491f471199077e/FLAGc93a21e53 [2020-07-20 11:48:25,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd0c6e3a3/96aca84fe9a04c529a491f471199077e [2020-07-20 11:48:25,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:48:25,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:48:25,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:48:25,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:48:25,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:48:25,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:48:25" (1/1) ... [2020-07-20 11:48:25,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da494c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:25, skipping insertion in model container [2020-07-20 11:48:25,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:48:25" (1/1) ... [2020-07-20 11:48:25,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:48:25,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:48:26,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:48:26,086 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:48:26,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:48:26,118 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:48:26,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26 WrapperNode [2020-07-20 11:48:26,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:48:26,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:48:26,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:48:26,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:48:26,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (1/1) ... [2020-07-20 11:48:26,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (1/1) ... [2020-07-20 11:48:26,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (1/1) ... [2020-07-20 11:48:26,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (1/1) ... [2020-07-20 11:48:26,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (1/1) ... [2020-07-20 11:48:26,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (1/1) ... [2020-07-20 11:48:26,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (1/1) ... [2020-07-20 11:48:26,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:48:26,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:48:26,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:48:26,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:48:26,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (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 [2020-07-20 11:48:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:48:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:48:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:48:26,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:48:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:48:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:48:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:48:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:48:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:48:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:48:26,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:48:26,533 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:48:26,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:48:26 BoogieIcfgContainer [2020-07-20 11:48:26,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:48:26,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:48:26,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:48:26,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:48:26,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:48:25" (1/3) ... [2020-07-20 11:48:26,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdbc445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:48:26, skipping insertion in model container [2020-07-20 11:48:26,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:26" (2/3) ... [2020-07-20 11:48:26,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdbc445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:48:26, skipping insertion in model container [2020-07-20 11:48:26,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:48:26" (3/3) ... [2020-07-20 11:48:26,549 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-07-20 11:48:26,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:48:26,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:48:26,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:48:26,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:48:26,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:48:26,614 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:48:26,614 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:48:26,615 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:48:26,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:48:26,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:48:26,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:48:26,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 11:48:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 11:48:26,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:26,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:48:26,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:26,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:26,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1712329921, now seen corresponding path program 1 times [2020-07-20 11:48:26,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:26,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350780269] [2020-07-20 11:48:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:26,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:48:26,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:26,883 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:26,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:26,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350780269] [2020-07-20 11:48:26,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:26,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:48:26,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887326280] [2020-07-20 11:48:26,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:48:26,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:26,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:48:26,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:48:26,962 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2020-07-20 11:48:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:27,072 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-20 11:48:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:48:27,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 11:48:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:27,085 INFO L225 Difference]: With dead ends: 39 [2020-07-20 11:48:27,085 INFO L226 Difference]: Without dead ends: 12 [2020-07-20 11:48:27,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:48:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-20 11:48:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-20 11:48:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-20 11:48:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-20 11:48:27,141 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-20 11:48:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:27,142 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-20 11:48:27,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:48:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-20 11:48:27,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 11:48:27,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:27,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:48:27,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:27,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:27,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1117320769, now seen corresponding path program 1 times [2020-07-20 11:48:27,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:27,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406319268] [2020-07-20 11:48:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:48:27,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:48:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:48:27,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:48:27,417 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:48:27,418 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:48:27,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:27,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:48:27 BoogieIcfgContainer [2020-07-20 11:48:27,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:48:27,649 INFO L168 Benchmark]: Toolchain (without parser) took 1796.97 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 104.1 MB in the beginning and 138.9 MB in the end (delta: -34.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:27,651 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 145.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 11:48:27,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.85 ms. Allocated memory is still 145.8 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:27,653 INFO L168 Benchmark]: Boogie Preprocessor took 32.35 ms. Allocated memory is still 145.8 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:27,654 INFO L168 Benchmark]: RCFGBuilder took 385.79 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 92.7 MB in the beginning and 172.0 MB in the end (delta: -79.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:27,655 INFO L168 Benchmark]: TraceAbstraction took 1107.07 ms. Allocated memory is still 204.5 MB. Free memory was 172.0 MB in the beginning and 138.9 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:27,659 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 145.8 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.85 ms. Allocated memory is still 145.8 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.35 ms. Allocated memory is still 145.8 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 385.79 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 92.7 MB in the beginning and 172.0 MB in the end (delta: -79.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1107.07 ms. Allocated memory is still 204.5 MB. Free memory was 172.0 MB in the beginning and 138.9 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 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: [L13] int x=__VERIFIER_nondet_int(); [L14] int y=__VERIFIER_nondet_int(); [L16] COND TRUE y>0 VAL [x=100, y=1] [L18] COND FALSE !(x<100) VAL [x=100, y=1] [L23] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 49 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 135 SizeOfPredicates, 2 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 4 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 incorrect! Received shutdown request...