/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:29:39,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:29:39,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:29:39,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:29:39,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:29:39,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:29:39,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:29:39,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:29:39,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:29:39,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:29:39,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:29:39,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:29:39,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:29:39,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:29:39,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:29:39,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:29:39,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:29:39,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:29:39,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:29:39,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:29:39,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:29:39,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:29:39,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:29:39,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:29:39,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:29:39,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:29:39,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:29:39,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:29:39,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:29:39,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:29:39,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:29:39,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:29:39,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:29:39,637 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:29:39,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:29:39,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:29:39,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:29:39,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:29:39,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:29:39,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:29:39,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:29:39,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:29:39,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:29:39,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:29:39,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:29:39,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:29:39,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:29:39,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:29:39,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:29:39,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:29:39,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:29:39,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:29:39,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:29:39,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:29:39,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:29:39,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:29:39,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:29:39,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:29:39,642 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:29:39,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:29:39,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:29:39,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:29:39,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:29:39,934 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:29:39,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-08-18 15:29:40,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a075ad2b7/602b869bdb6540fb94c8e8fc378b9c6b/FLAG358a9f11e [2020-08-18 15:29:40,398 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:29:40,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-08-18 15:29:40,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a075ad2b7/602b869bdb6540fb94c8e8fc378b9c6b/FLAG358a9f11e [2020-08-18 15:29:40,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a075ad2b7/602b869bdb6540fb94c8e8fc378b9c6b [2020-08-18 15:29:40,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:29:40,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:29:40,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:29:40,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:29:40,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:29:40,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:40,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40, skipping insertion in model container [2020-08-18 15:29:40,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:40,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:29:40,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:29:40,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:29:40,973 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:29:40,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:29:40,997 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:29:40,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40 WrapperNode [2020-08-18 15:29:40,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:29:40,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:29:40,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:29:40,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:29:41,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:41,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:41,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:41,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:41,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:41,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:41,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... [2020-08-18 15:29:41,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:29:41,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:29:41,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:29:41,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:29:41,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 15:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-18 15:29:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-18 15:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:29:41,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:29:41,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:29:41,312 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 15:29:41,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:29:41 BoogieIcfgContainer [2020-08-18 15:29:41,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:29:41,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:29:41,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:29:41,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:29:41,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:29:40" (1/3) ... [2020-08-18 15:29:41,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3a53cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:29:41, skipping insertion in model container [2020-08-18 15:29:41,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:40" (2/3) ... [2020-08-18 15:29:41,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3a53cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:29:41, skipping insertion in model container [2020-08-18 15:29:41,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:29:41" (3/3) ... [2020-08-18 15:29:41,325 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-08-18 15:29:41,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:29:41,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:29:41,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:29:41,384 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:29:41,384 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:29:41,384 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:29:41,385 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:29:41,385 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:29:41,385 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:29:41,385 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:29:41,385 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:29:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-18 15:29:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 15:29:41,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:41,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:41,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:41,420 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2020-08-18 15:29:41,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:41,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193905242] [2020-08-18 15:29:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:41,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:41,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193905242] [2020-08-18 15:29:41,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:29:41,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:29:41,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242627149] [2020-08-18 15:29:41,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:29:41,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:41,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:29:41,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:29:41,605 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-08-18 15:29:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:41,641 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-08-18 15:29:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:29:41,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-08-18 15:29:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:41,652 INFO L225 Difference]: With dead ends: 29 [2020-08-18 15:29:41,653 INFO L226 Difference]: Without dead ends: 11 [2020-08-18 15:29:41,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:29:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-08-18 15:29:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-08-18 15:29:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-08-18 15:29:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-08-18 15:29:41,698 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-08-18 15:29:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:41,699 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-08-18 15:29:41,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:29:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-08-18 15:29:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 15:29:41,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:41,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:41,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:29:41,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2020-08-18 15:29:41,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:41,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120672486] [2020-08-18 15:29:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:41,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:29:41,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120672486] [2020-08-18 15:29:41,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:29:41,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:29:41,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397301602] [2020-08-18 15:29:41,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:29:41,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:41,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:29:41,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:29:41,810 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2020-08-18 15:29:41,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:41,846 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-08-18 15:29:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:29:41,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-08-18 15:29:41,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:41,847 INFO L225 Difference]: With dead ends: 11 [2020-08-18 15:29:41,847 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 15:29:41,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:29:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 15:29:41,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 15:29:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 15:29:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 15:29:41,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-18 15:29:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:41,850 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 15:29:41,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:29:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 15:29:41,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 15:29:41,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:29:41,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 15:29:41,884 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 15:29:41,884 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:29:41,885 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-18 15:29:41,885 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-18 15:29:41,885 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-18 15:29:41,885 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-18 15:29:41,886 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:29:41,886 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 15:29:41,886 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 15:29:41,886 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:29:41,887 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-08-18 15:29:41,887 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-08-18 15:29:41,887 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-18 15:29:41,887 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-08-18 15:29:41,887 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-08-18 15:29:41,888 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-08-18 15:29:41,888 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-08-18 15:29:41,888 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-08-18 15:29:41,888 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2020-08-18 15:29:41,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:29:41 BoogieIcfgContainer [2020-08-18 15:29:41,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:29:41,898 INFO L168 Benchmark]: Toolchain (without parser) took 1116.48 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 138.5 MB in the end (delta: -34.7 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:41,899 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:29:41,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.08 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 94.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:41,901 INFO L168 Benchmark]: Boogie Preprocessor took 107.88 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 182.0 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:41,902 INFO L168 Benchmark]: RCFGBuilder took 209.23 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 172.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:41,904 INFO L168 Benchmark]: TraceAbstraction took 578.40 ms. Allocated memory is still 202.9 MB. Free memory was 171.7 MB in the beginning and 138.5 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:29:41,908 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 216.08 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 94.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.88 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 182.0 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 209.23 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 172.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 578.40 ms. Allocated memory is still 202.9 MB. Free memory was 171.7 MB in the beginning and 138.5 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...