/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/bitvector-regression/signextension-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:48,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:48,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:48,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:48,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:48,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:48,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:48,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:48,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:48,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:48,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:48,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:48,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:48,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:48,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:48,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:48,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:48,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:48,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:48,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:48,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:48,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:48,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:48,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:48,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:48,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:48,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:48,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:48,643 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 10:45:48,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:48,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:48,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:48,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:48,674 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:48,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:48,675 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:48,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:48,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:48,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:48,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:48,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:48,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:48,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:48,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:48,678 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:48,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:48,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:48,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:48,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:48,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:48,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:48,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:48,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:48,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:48,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:48,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:48,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:48,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:48,685 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 10:45:48,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:48,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:48,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:48,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:48,984 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:48,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c [2020-07-20 10:45:49,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dbff0ddf/091ea6adf9db42198d3413047934ed57/FLAG86a3b0a5e [2020-07-20 10:45:49,531 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:49,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/signextension-2.c [2020-07-20 10:45:49,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dbff0ddf/091ea6adf9db42198d3413047934ed57/FLAG86a3b0a5e [2020-07-20 10:45:49,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dbff0ddf/091ea6adf9db42198d3413047934ed57 [2020-07-20 10:45:49,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:49,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:49,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:49,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:49,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:49,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:49" (1/1) ... [2020-07-20 10:45:49,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360c61e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:49, skipping insertion in model container [2020-07-20 10:45:49,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:49" (1/1) ... [2020-07-20 10:45:49,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:50,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:50,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:50,210 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:50,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:50,234 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:50,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50 WrapperNode [2020-07-20 10:45:50,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:50,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:50,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:50,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:50,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (1/1) ... [2020-07-20 10:45:50,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (1/1) ... [2020-07-20 10:45:50,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (1/1) ... [2020-07-20 10:45:50,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (1/1) ... [2020-07-20 10:45:50,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (1/1) ... [2020-07-20 10:45:50,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (1/1) ... [2020-07-20 10:45:50,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (1/1) ... [2020-07-20 10:45:50,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:50,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:50,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:50,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:50,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (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 10:45:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:50,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:50,569 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 10:45:50,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:50 BoogieIcfgContainer [2020-07-20 10:45:50,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:50,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:50,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:50,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:50,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:49" (1/3) ... [2020-07-20 10:45:50,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e167fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:50, skipping insertion in model container [2020-07-20 10:45:50,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:50" (2/3) ... [2020-07-20 10:45:50,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e167fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:50, skipping insertion in model container [2020-07-20 10:45:50,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:50" (3/3) ... [2020-07-20 10:45:50,581 INFO L109 eAbstractionObserver]: Analyzing ICFG signextension-2.c [2020-07-20 10:45:50,589 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:50,595 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:50,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:50,628 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:50,628 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:50,628 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:50,629 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:50,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:50,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:50,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:50,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:50,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-20 10:45:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-20 10:45:50,650 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:50,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:45:50,651 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:50,656 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times [2020-07-20 10:45:50,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:50,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272376821] [2020-07-20 10:45:50,664 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 10:45:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:50,715 WARN L261 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 10:45:50,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:50,805 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 10:45:50,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:50,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272376821] [2020-07-20 10:45:50,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:50,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:45:50,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156659198] [2020-07-20 10:45:50,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:45:50,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:50,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:45:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:45:50,833 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-07-20 10:45:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:50,869 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-20 10:45:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:45:50,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-20 10:45:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:50,883 INFO L225 Difference]: With dead ends: 16 [2020-07-20 10:45:50,884 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 10:45:50,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:45:50,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 10:45:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 10:45:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 10:45:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 10:45:50,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-07-20 10:45:50,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:50,921 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 10:45:50,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:45:50,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 10:45:50,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 10:45:51,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:51,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 10:45:51,192 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 10:45:51,193 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 10:45:51,193 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 10:45:51,193 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 10:45:51,194 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 10:45:51,194 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 10:45:51,194 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-07-20 10:45:51,194 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 27) the Hoare annotation is: true [2020-07-20 10:45:51,195 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 27) no Hoare annotation was computed. [2020-07-20 10:45:51,195 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 27) no Hoare annotation was computed. [2020-07-20 10:45:51,195 INFO L264 CegarLoopResult]: At program point L21(lines 3 27) the Hoare annotation is: false [2020-07-20 10:45:51,195 INFO L268 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-07-20 10:45:51,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:51 BoogieIcfgContainer [2020-07-20 10:45:51,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:51,209 INFO L168 Benchmark]: Toolchain (without parser) took 1229.32 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 145.6 MB in the end (delta: -44.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:51,210 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:51,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.70 ms. Allocated memory is still 137.4 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:51,212 INFO L168 Benchmark]: Boogie Preprocessor took 22.51 ms. Allocated memory is still 137.4 MB. Free memory was 91.7 MB in the beginning and 90.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:51,213 INFO L168 Benchmark]: RCFGBuilder took 313.74 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 171.1 MB in the end (delta: -80.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:51,214 INFO L168 Benchmark]: TraceAbstraction took 632.89 ms. Allocated memory is still 201.9 MB. Free memory was 170.4 MB in the beginning and 145.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:51,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.70 ms. Allocated memory is still 137.4 MB. Free memory was 101.1 MB in the beginning and 91.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.51 ms. Allocated memory is still 137.4 MB. Free memory was 91.7 MB in the beginning and 90.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.74 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 171.1 MB in the end (delta: -80.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 632.89 ms. Allocated memory is still 201.9 MB. Free memory was 170.4 MB in the beginning and 145.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 3]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 6 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 13 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...