/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:17:59,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:17:59,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:17:59,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:17:59,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:17:59,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:17:59,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:17:59,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:17:59,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:17:59,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:17:59,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:17:59,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:17:59,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:17:59,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:17:59,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:17:59,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:17:59,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:17:59,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:17:59,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:17:59,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:17:59,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:17:59,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:17:59,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:17:59,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:17:59,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 17:17:59,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:17:59,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:17:59,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:17:59,609 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 [2020-08-21 17:17:59,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:17:59,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:17:59,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:17:59,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:17:59,650 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:17:59,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:17:59,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:17:59,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:17:59,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:17:59,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:17:59,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:17:59,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:17:59,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:17:59,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:17:59,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:17:59,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:17:59,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:17:59,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:17:59,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:17:59,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:17:59,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:17:59,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:17:59,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:17:59,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:17:59,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:17:59,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:17:59,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:17:59,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:17:59,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:17:59,656 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:17:59,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:17:59,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:17:59,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:17:59,999 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:17:59,999 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:18:00,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c [2020-08-21 17:18:00,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a004335bb/4b689ebcc40e4095b754a947718eb048/FLAGe9249509a [2020-08-21 17:18:00,499 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:18:00,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/implicitunsignedconversion-2.c [2020-08-21 17:18:00,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a004335bb/4b689ebcc40e4095b754a947718eb048/FLAGe9249509a [2020-08-21 17:18:00,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a004335bb/4b689ebcc40e4095b754a947718eb048 [2020-08-21 17:18:00,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:18:00,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:18:00,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:18:00,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:18:00,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:18:00,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:18:00" (1/1) ... [2020-08-21 17:18:00,909 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 21.08 05:18:00, skipping insertion in model container [2020-08-21 17:18:00,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:18:00" (1/1) ... [2020-08-21 17:18:00,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:18:00,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:18:01,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:18:01,132 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:18:01,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:18:01,156 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:18:01,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01 WrapperNode [2020-08-21 17:18:01,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:18:01,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:18:01,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:18:01,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:18:01,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (1/1) ... [2020-08-21 17:18:01,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (1/1) ... [2020-08-21 17:18:01,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (1/1) ... [2020-08-21 17:18:01,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (1/1) ... [2020-08-21 17:18:01,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (1/1) ... [2020-08-21 17:18:01,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (1/1) ... [2020-08-21 17:18:01,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (1/1) ... [2020-08-21 17:18:01,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:18:01,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:18:01,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:18:01,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:18:01,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (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 [2020-08-21 17:18:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:18:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:18:01,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:18:01,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:18:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:18:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:18:01,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:18:01,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:18:01,475 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 17:18:01,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:18:01 BoogieIcfgContainer [2020-08-21 17:18:01,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:18:01,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:18:01,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:18:01,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:18:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:18:00" (1/3) ... [2020-08-21 17:18:01,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e4591d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:18:01, skipping insertion in model container [2020-08-21 17:18:01,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:18:01" (2/3) ... [2020-08-21 17:18:01,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e4591d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:18:01, skipping insertion in model container [2020-08-21 17:18:01,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:18:01" (3/3) ... [2020-08-21 17:18:01,487 INFO L109 eAbstractionObserver]: Analyzing ICFG implicitunsignedconversion-2.c [2020-08-21 17:18:01,498 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:18:01,506 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:18:01,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:18:01,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:18:01,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:18:01,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:18:01,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:18:01,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:18:01,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:18:01,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:18:01,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:18:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-08-21 17:18:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-08-21 17:18:01,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:18:01,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:18:01,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:18:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:18:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times [2020-08-21 17:18:01,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:18:01,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240100792] [2020-08-21 17:18:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:18:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:18:01,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:18:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:18:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:18:01,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240100792] [2020-08-21 17:18:01,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:18:01,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:18:01,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409937326] [2020-08-21 17:18:01,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:18:01,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:18:01,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:18:01,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:18:01,920 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-08-21 17:18:01,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:18:01,958 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-08-21 17:18:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:18:01,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-08-21 17:18:01,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:18:01,970 INFO L225 Difference]: With dead ends: 16 [2020-08-21 17:18:01,970 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:18:01,974 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 [2020-08-21 17:18:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:18:02,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:18:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:18:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:18:02,012 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-08-21 17:18:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:18:02,012 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:18:02,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:18:02,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:18:02,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:18:02,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:18:02,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:18:02,041 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 17:18:02,041 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:18:02,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:18:02,042 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 17:18:02,042 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 17:18:02,043 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:18:02,043 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-08-21 17:18:02,043 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 14) the Hoare annotation is: true [2020-08-21 17:18:02,044 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 14) no Hoare annotation was computed. [2020-08-21 17:18:02,044 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 14) no Hoare annotation was computed. [2020-08-21 17:18:02,044 INFO L264 CegarLoopResult]: At program point L8(lines 3 14) the Hoare annotation is: false [2020-08-21 17:18:02,044 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-21 17:18:02,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:18:02 BoogieIcfgContainer [2020-08-21 17:18:02,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:18:02,062 INFO L168 Benchmark]: Toolchain (without parser) took 1160.81 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 101.7 MB in the beginning and 144.3 MB in the end (delta: -42.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:18:02,064 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:18:02,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.59 ms. Allocated memory is still 145.8 MB. Free memory was 101.5 MB in the beginning and 92.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:18:02,067 INFO L168 Benchmark]: Boogie Preprocessor took 115.55 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 92.3 MB in the beginning and 179.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:18:02,068 INFO L168 Benchmark]: RCFGBuilder took 205.87 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 170.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:18:02,070 INFO L168 Benchmark]: TraceAbstraction took 578.65 ms. Allocated memory is still 201.3 MB. Free memory was 169.4 MB in the beginning and 144.3 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:18:02,076 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.59 ms. Allocated memory is still 145.8 MB. Free memory was 101.5 MB in the beginning and 92.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.55 ms. Allocated memory was 145.8 MB in the beginning and 201.3 MB in the end (delta: 55.6 MB). Free memory was 92.3 MB in the beginning and 179.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 205.87 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 170.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 578.65 ms. Allocated memory is still 201.3 MB. Free memory was 169.4 MB in the beginning and 144.3 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 0.4s, 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, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 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...