/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 22:00:25,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 22:00:25,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 22:00:25,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 22:00:25,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 22:00:25,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 22:00:25,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 22:00:25,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 22:00:25,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 22:00:25,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 22:00:25,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 22:00:25,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 22:00:25,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 22:00:25,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 22:00:25,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 22:00:25,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 22:00:25,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 22:00:25,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 22:00:25,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 22:00:25,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 22:00:25,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 22:00:25,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 22:00:25,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 22:00:25,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 22:00:25,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 22:00:25,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 22:00:25,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 22:00:25,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 22:00:25,825 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 [2020-08-27 22:00:25,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 22:00:25,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 22:00:25,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 22:00:25,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 22:00:25,871 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 22:00:25,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 22:00:25,872 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 22:00:25,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 22:00:25,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 22:00:25,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 22:00:25,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 22:00:25,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 22:00:25,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 22:00:25,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 22:00:25,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 22:00:25,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 22:00:25,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 22:00:25,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 22:00:25,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 22:00:25,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 22:00:25,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 22:00:25,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 22:00:25,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 22:00:25,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 22:00:25,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 22:00:25,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 22:00:25,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 22:00:25,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 22:00:25,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 22:00:25,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 22:00:26,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 22:00:26,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 22:00:26,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 22:00:26,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 22:00:26,330 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 22:00:26,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c [2020-08-27 22:00:26,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607187039/1137632f307b4d079481697daa51f4fd/FLAG9b77b9d0d [2020-08-27 22:00:26,969 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 22:00:26,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq2.c [2020-08-27 22:00:26,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607187039/1137632f307b4d079481697daa51f4fd/FLAG9b77b9d0d [2020-08-27 22:00:27,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607187039/1137632f307b4d079481697daa51f4fd [2020-08-27 22:00:27,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 22:00:27,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 22:00:27,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 22:00:27,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 22:00:27,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 22:00:27,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e62aa9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27, skipping insertion in model container [2020-08-27 22:00:27,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 22:00:27,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 22:00:27,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:00:27,597 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 22:00:27,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 22:00:27,635 INFO L208 MainTranslator]: Completed translation [2020-08-27 22:00:27,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27 WrapperNode [2020-08-27 22:00:27,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 22:00:27,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 22:00:27,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 22:00:27,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 22:00:27,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (1/1) ... [2020-08-27 22:00:27,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 22:00:27,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 22:00:27,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 22:00:27,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 22:00:27,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (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 [2020-08-27 22:00:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 22:00:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 22:00:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-27 22:00:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 22:00:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 22:00:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-27 22:00:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-27 22:00:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 22:00:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 22:00:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 22:00:28,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 22:00:28,046 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-27 22:00:28,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:00:28 BoogieIcfgContainer [2020-08-27 22:00:28,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 22:00:28,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 22:00:28,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 22:00:28,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 22:00:28,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:00:27" (1/3) ... [2020-08-27 22:00:28,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9068a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:00:28, skipping insertion in model container [2020-08-27 22:00:28,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:00:27" (2/3) ... [2020-08-27 22:00:28,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f9068a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:00:28, skipping insertion in model container [2020-08-27 22:00:28,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:00:28" (3/3) ... [2020-08-27 22:00:28,065 INFO L109 eAbstractionObserver]: Analyzing ICFG eq2.c [2020-08-27 22:00:28,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 22:00:28,086 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 22:00:28,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 22:00:28,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 22:00:28,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 22:00:28,133 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 22:00:28,133 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 22:00:28,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 22:00:28,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 22:00:28,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 22:00:28,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 22:00:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-27 22:00:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-27 22:00:28,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:00:28,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 22:00:28,161 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:00:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:00:28,167 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2020-08-27 22:00:28,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:00:28,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014063632] [2020-08-27 22:00:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:00:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:00:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 22:00:28,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014063632] [2020-08-27 22:00:28,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 22:00:28,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 22:00:28,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48667218] [2020-08-27 22:00:28,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 22:00:28,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:00:28,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 22:00:28,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 22:00:28,618 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-08-27 22:00:28,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:00:28,773 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-08-27 22:00:28,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 22:00:28,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-27 22:00:28,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:00:28,785 INFO L225 Difference]: With dead ends: 28 [2020-08-27 22:00:28,785 INFO L226 Difference]: Without dead ends: 0 [2020-08-27 22:00:28,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-27 22:00:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-27 22:00:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-27 22:00:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-27 22:00:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-27 22:00:28,820 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-27 22:00:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:00:28,821 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-27 22:00:28,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 22:00:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-27 22:00:28,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-27 22:00:28,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 22:00:28,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-27 22:00:28,911 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-27 22:00:28,912 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-27 22:00:28,912 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-27 22:00:28,912 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-27 22:00:28,913 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-27 22:00:28,913 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-27 22:00:28,913 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true [2020-08-27 22:00:28,913 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed. [2020-08-27 22:00:28,913 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-27 22:00:28,914 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed. [2020-08-27 22:00:28,914 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= main_~z~0 main_~y~0))) [2020-08-27 22:00:28,915 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= main_~z~0 main_~y~0))) [2020-08-27 22:00:28,917 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-27 22:00:28,917 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-27 22:00:28,917 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-27 22:00:28,917 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-27 22:00:28,917 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-27 22:00:28,918 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-27 22:00:28,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:00:28 BoogieIcfgContainer [2020-08-27 22:00:28,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 22:00:28,963 INFO L168 Benchmark]: Toolchain (without parser) took 1625.22 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 134.3 MB in the end (delta: -30.6 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-08-27 22:00:28,966 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 22:00:28,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.41 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-27 22:00:28,970 INFO L168 Benchmark]: Boogie Preprocessor took 113.86 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 183.4 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-27 22:00:28,971 INFO L168 Benchmark]: RCFGBuilder took 300.16 ms. Allocated memory is still 203.4 MB. Free memory was 183.4 MB in the beginning and 171.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-27 22:00:28,973 INFO L168 Benchmark]: TraceAbstraction took 905.52 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 134.3 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-08-27 22:00:28,985 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.41 ms. Allocated memory is still 140.5 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.86 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.0 MB in the beginning and 183.4 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 300.16 ms. Allocated memory is still 203.4 MB. Free memory was 183.4 MB in the beginning and 171.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 905.52 ms. Allocated memory is still 203.4 MB. Free memory was 170.3 MB in the beginning and 134.3 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: (z + 4294967296 * (y / 4294967296) <= y + 4294967296 * (z / 4294967296) && y + 4294967296 * (z / 4294967296) < z + 4294967296 * (y / 4294967296) + 1) && z <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 7 SDslu, 29 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 75 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 747 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...