/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:15:46,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:15:46,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:15:46,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:15:46,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:15:46,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:15:46,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:15:46,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:15:46,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:15:46,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:15:46,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:15:46,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:15:46,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:15:46,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:15:46,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:15:46,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:15:46,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:15:46,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:15:46,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:15:46,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:15:46,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:15:46,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:15:46,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:15:46,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:15:46,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 20:15:46,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:15:46,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:15:46,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:15:46,612 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 20:15:46,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:15:46,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:15:46,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:15:46,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:15:46,639 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:15:46,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:15:46,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:15:46,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:15:46,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:15:46,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:15:46,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:15:46,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:15:46,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:15:46,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:15:46,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:15:46,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:15:46,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:15:46,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:15:46,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:15:46,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:15:46,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:15:46,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:15:46,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:15:46,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:15:46,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:15:46,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:15:46,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:15:46,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:15:46,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:15:46,644 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:15:46,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:15:46,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:15:46,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:15:46,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:15:46,979 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:15:46,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c [2020-08-18 20:15:47,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00063c464/28c246eede0d4f888d826d139025495b/FLAG3fae7c9a1 [2020-08-18 20:15:47,552 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:15:47,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/signextension-2.c [2020-08-18 20:15:47,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00063c464/28c246eede0d4f888d826d139025495b/FLAG3fae7c9a1 [2020-08-18 20:15:47,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00063c464/28c246eede0d4f888d826d139025495b [2020-08-18 20:15:47,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:15:47,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:15:47,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:47,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:15:47,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:15:47,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:47" (1/1) ... [2020-08-18 20:15:47,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a7ca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:47, skipping insertion in model container [2020-08-18 20:15:47,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:47" (1/1) ... [2020-08-18 20:15:47,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:15:47,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:15:48,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:48,126 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:15:48,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:48,154 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:15:48,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48 WrapperNode [2020-08-18 20:15:48,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:48,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:15:48,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:15:48,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:15:48,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (1/1) ... [2020-08-18 20:15:48,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (1/1) ... [2020-08-18 20:15:48,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (1/1) ... [2020-08-18 20:15:48,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (1/1) ... [2020-08-18 20:15:48,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (1/1) ... [2020-08-18 20:15:48,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (1/1) ... [2020-08-18 20:15:48,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (1/1) ... [2020-08-18 20:15:48,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:15:48,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:15:48,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:15:48,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:15:48,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (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 20:15:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:15:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:15:48,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:15:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:15:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:15:48,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:15:48,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:15:48,514 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:15:48,514 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 20:15:48,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:48 BoogieIcfgContainer [2020-08-18 20:15:48,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:15:48,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:15:48,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:15:48,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:15:48,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:15:47" (1/3) ... [2020-08-18 20:15:48,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35af213a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:48, skipping insertion in model container [2020-08-18 20:15:48,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:48" (2/3) ... [2020-08-18 20:15:48,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35af213a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:48, skipping insertion in model container [2020-08-18 20:15:48,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:48" (3/3) ... [2020-08-18 20:15:48,526 INFO L109 eAbstractionObserver]: Analyzing ICFG signextension-2.c [2020-08-18 20:15:48,535 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:15:48,542 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:15:48,555 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:15:48,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:15:48,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:15:48,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:15:48,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:15:48,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:15:48,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:15:48,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:15:48,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:15:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-08-18 20:15:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-08-18 20:15:48,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:15:48,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:15:48,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:15:48,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:15:48,609 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times [2020-08-18 20:15:48,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:15:48,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825322577] [2020-08-18 20:15:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:15:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:49,016 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2020-08-18 20:15:49,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:15:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:49,028 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 20:15:49,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825322577] [2020-08-18 20:15:49,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:15:49,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:15:49,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332836720] [2020-08-18 20:15:49,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:15:49,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:15:49,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:15:49,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:15:49,072 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-08-18 20:15:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:15:49,128 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-08-18 20:15:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:15:49,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-08-18 20:15:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:15:49,140 INFO L225 Difference]: With dead ends: 16 [2020-08-18 20:15:49,140 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:15:49,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:15:49,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:15:49,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:15:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:15:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:15:49,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-08-18 20:15:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:15:49,169 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:15:49,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:15:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:15:49,169 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:15:49,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:15:49,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:15:49,201 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 20:15:49,202 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:15:49,202 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:15:49,202 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 20:15:49,202 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 20:15:49,202 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 20:15:49,203 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-08-18 20:15:49,208 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 27) the Hoare annotation is: true [2020-08-18 20:15:49,208 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 27) no Hoare annotation was computed. [2020-08-18 20:15:49,208 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 27) no Hoare annotation was computed. [2020-08-18 20:15:49,208 INFO L264 CegarLoopResult]: At program point L21(lines 3 27) the Hoare annotation is: false [2020-08-18 20:15:49,208 INFO L268 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-08-18 20:15:49,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:15:49 BoogieIcfgContainer [2020-08-18 20:15:49,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:15:49,222 INFO L168 Benchmark]: Toolchain (without parser) took 1323.85 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 136.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:49,223 INFO L168 Benchmark]: CDTParser took 0.27 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:15:49,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.13 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:49,226 INFO L168 Benchmark]: Boogie Preprocessor took 104.02 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 182.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:49,227 INFO L168 Benchmark]: RCFGBuilder took 257.28 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 170.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:49,228 INFO L168 Benchmark]: TraceAbstraction took 700.40 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 136.1 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:49,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.13 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 93.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.02 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 182.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.28 ms. Allocated memory is still 202.9 MB. Free memory was 181.4 MB in the beginning and 170.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 700.40 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 136.1 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 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, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...