/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/loop-industry-pattern/mod3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:28:45,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:28:45,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:28:45,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:28:45,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:28:45,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:28:45,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:28:45,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:28:45,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:28:45,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:28:45,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:28:45,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:28:45,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:28:45,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:28:45,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:28:45,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:28:45,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:28:45,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:28:45,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:28:45,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:28:45,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:28:45,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:28:45,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:28:45,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:28:45,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 17:28:45,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:28:45,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:28:45,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:28:45,616 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 17:28:45,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:28:45,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:28:45,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:28:45,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:28:45,663 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:28:45,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:28:45,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:28:45,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:28:45,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:28:45,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:28:45,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:28:45,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:28:45,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:28:45,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:28:45,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:28:45,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:28:45,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:28:45,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:28:45,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:28:45,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:28:45,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:28:45,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:28:45,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:28:45,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:28:45,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:28:45,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:28:45,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:28:45,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:28:45,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:28:45,669 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 17:28:45,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:28:45,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:28:45,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:28:45,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:28:45,946 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:28:45,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-08-21 17:28:46,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b543923b/6c39931ffc3549c998c1be5bb5136959/FLAGf266c3e04 [2020-08-21 17:28:46,484 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:28:46,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2020-08-21 17:28:46,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b543923b/6c39931ffc3549c998c1be5bb5136959/FLAGf266c3e04 [2020-08-21 17:28:46,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b543923b/6c39931ffc3549c998c1be5bb5136959 [2020-08-21 17:28:46,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:28:46,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:28:46,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:46,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:28:46,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:28:46,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:46" (1/1) ... [2020-08-21 17:28:46,883 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 05:28:46, skipping insertion in model container [2020-08-21 17:28:46,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:46" (1/1) ... [2020-08-21 17:28:46,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:28:46,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:28:47,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:47,109 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:28:47,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:47,244 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:28:47,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47 WrapperNode [2020-08-21 17:28:47,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:47,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:28:47,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:28:47,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:28:47,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (1/1) ... [2020-08-21 17:28:47,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (1/1) ... [2020-08-21 17:28:47,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (1/1) ... [2020-08-21 17:28:47,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (1/1) ... [2020-08-21 17:28:47,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (1/1) ... [2020-08-21 17:28:47,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (1/1) ... [2020-08-21 17:28:47,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (1/1) ... [2020-08-21 17:28:47,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:28:47,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:28:47,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:28:47,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:28:47,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (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 17:28:47,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:28:47,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:28:47,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:28:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:28:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:28:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 17:28:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:28:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:28:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:28:47,614 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:28:47,615 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 17:28:47,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:47 BoogieIcfgContainer [2020-08-21 17:28:47,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:28:47,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:28:47,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:28:47,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:28:47,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:28:46" (1/3) ... [2020-08-21 17:28:47,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb75ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:47, skipping insertion in model container [2020-08-21 17:28:47,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:47" (2/3) ... [2020-08-21 17:28:47,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb75ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:47, skipping insertion in model container [2020-08-21 17:28:47,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:47" (3/3) ... [2020-08-21 17:28:47,627 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.c [2020-08-21 17:28:47,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:28:47,647 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:28:47,660 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:28:47,684 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:28:47,684 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:28:47,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:28:47,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:28:47,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:28:47,685 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:28:47,685 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:28:47,685 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:28:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-21 17:28:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 17:28:47,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:47,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:47,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:47,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:47,739 INFO L82 PathProgramCache]: Analyzing trace with hash 446778609, now seen corresponding path program 1 times [2020-08-21 17:28:47,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:47,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16248241] [2020-08-21 17:28:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:48,247 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 17:28:48,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16248241] [2020-08-21 17:28:48,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:48,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:28:48,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307634531] [2020-08-21 17:28:48,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:28:48,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:48,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:28:48,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:28:48,270 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-08-21 17:28:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:56,892 INFO L93 Difference]: Finished difference Result 71 states and 99 transitions. [2020-08-21 17:28:56,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:28:56,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-08-21 17:28:56,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:56,906 INFO L225 Difference]: With dead ends: 71 [2020-08-21 17:28:56,906 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 17:28:56,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 17:28:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-08-21 17:28:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-21 17:28:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-08-21 17:28:56,946 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2020-08-21 17:28:56,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:56,946 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-08-21 17:28:56,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:28:56,947 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-08-21 17:28:56,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 17:28:56,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:56,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:56,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:28:56,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:28:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:56,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1003929308, now seen corresponding path program 1 times [2020-08-21 17:28:56,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:56,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144961922] [2020-08-21 17:28:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:57,341 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 22 [2020-08-21 17:28:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:57,429 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 17:28:57,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144961922] [2020-08-21 17:28:57,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:57,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:57,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553535997] [2020-08-21 17:28:57,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:57,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:57,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:57,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:57,436 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 6 states. [2020-08-21 17:29:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:29:16,363 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2020-08-21 17:29:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:29:16,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-21 17:29:16,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:29:16,365 INFO L225 Difference]: With dead ends: 55 [2020-08-21 17:29:16,365 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:29:16,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 17:29:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:29:16,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:29:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:29:16,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:29:16,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-21 17:29:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:29:16,368 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:29:16,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:29:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:29:16,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:29:16,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:29:16,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:29:16,474 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:29:16,474 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= ~__return_121~0 |old(~__return_121~0)|) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|) (= ~__tmp_112_0~0 |old(~__tmp_112_0~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|)) [2020-08-21 17:29:16,475 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:29:16,475 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:29:16,475 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 17:29:16,475 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 17:29:16,475 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:29:16,475 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-08-21 17:29:16,476 INFO L268 CegarLoopResult]: For program point L126(lines 126 141) no Hoare annotation was computed. [2020-08-21 17:29:16,476 INFO L268 CegarLoopResult]: For program point L60(lines 60 82) no Hoare annotation was computed. [2020-08-21 17:29:16,476 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 149) no Hoare annotation was computed. [2020-08-21 17:29:16,476 INFO L268 CegarLoopResult]: For program point L23(lines 23 143) no Hoare annotation was computed. [2020-08-21 17:29:16,476 INFO L271 CegarLoopResult]: At program point L81(lines 15 149) the Hoare annotation is: true [2020-08-21 17:29:16,476 INFO L268 CegarLoopResult]: For program point L115(lines 115 142) no Hoare annotation was computed. [2020-08-21 17:29:16,477 INFO L271 CegarLoopResult]: At program point L140(lines 23 143) the Hoare annotation is: true [2020-08-21 17:29:16,477 INFO L268 CegarLoopResult]: For program point L37(lines 37 84) no Hoare annotation was computed. [2020-08-21 17:29:16,477 INFO L271 CegarLoopResult]: At program point L132(lines 23 143) the Hoare annotation is: true [2020-08-21 17:29:16,477 INFO L268 CegarLoopResult]: For program point L95(lines 95 104) no Hoare annotation was computed. [2020-08-21 17:29:16,477 INFO L264 CegarLoopResult]: At program point L120(lines 23 143) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-21 17:29:16,478 INFO L264 CegarLoopResult]: At program point L54(lines 24 112) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-21 17:29:16,478 INFO L268 CegarLoopResult]: For program point L21(lines 21 148) no Hoare annotation was computed. [2020-08-21 17:29:16,478 INFO L268 CegarLoopResult]: For program point L46(lines 46 83) no Hoare annotation was computed. [2020-08-21 17:29:16,478 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 149) no Hoare annotation was computed. [2020-08-21 17:29:16,478 INFO L264 CegarLoopResult]: At program point L42(lines 24 112) the Hoare annotation is: (= (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))) main_~main__x~0) [2020-08-21 17:29:16,479 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2020-08-21 17:29:16,479 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 149) the Hoare annotation is: (and (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= |old(~__tmp_112_0~0)| ~__tmp_112_0~0) (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= |old(~__return_121~0)| ~__return_121~0) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|)) [2020-08-21 17:29:16,479 INFO L268 CegarLoopResult]: For program point L88(lines 88 110) no Hoare annotation was computed. [2020-08-21 17:29:16,479 INFO L268 CegarLoopResult]: For program point L35(lines 35 111) no Hoare annotation was computed. [2020-08-21 17:29:16,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:29:16 BoogieIcfgContainer [2020-08-21 17:29:16,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:29:16,500 INFO L168 Benchmark]: Toolchain (without parser) took 29623.99 ms. Allocated memory was 149.4 MB in the beginning and 230.2 MB in the end (delta: 80.7 MB). Free memory was 105.2 MB in the beginning and 148.9 MB in the end (delta: -43.6 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:16,501 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:29:16,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.95 ms. Allocated memory was 149.4 MB in the beginning and 206.6 MB in the end (delta: 57.1 MB). Free memory was 105.0 MB in the beginning and 185.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:16,503 INFO L168 Benchmark]: Boogie Preprocessor took 31.92 ms. Allocated memory is still 206.6 MB. Free memory was 185.2 MB in the beginning and 183.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:16,504 INFO L168 Benchmark]: RCFGBuilder took 341.36 ms. Allocated memory is still 206.6 MB. Free memory was 183.3 MB in the beginning and 167.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:16,505 INFO L168 Benchmark]: TraceAbstraction took 28876.96 ms. Allocated memory was 206.6 MB in the beginning and 230.2 MB in the end (delta: 23.6 MB). Free memory was 166.6 MB in the beginning and 148.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:29:16,509 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.95 ms. Allocated memory was 149.4 MB in the beginning and 206.6 MB in the end (delta: 57.1 MB). Free memory was 105.0 MB in the beginning and 185.2 MB in the end (delta: -80.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.92 ms. Allocated memory is still 206.6 MB. Free memory was 185.2 MB in the beginning and 183.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.36 ms. Allocated memory is still 206.6 MB. Free memory was 183.3 MB in the beginning and 167.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28876.96 ms. Allocated memory was 206.6 MB in the beginning and 230.2 MB in the end (delta: 23.6 MB). Free memory was 166.6 MB in the beginning and 148.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 41.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 97]: 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: 24]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) == main__x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 31 SDslu, 79 SDs, 0 SdLazy, 146 SolverSat, 8 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 26.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=1, 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 115 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3784 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...