/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:16:47,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:16:47,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:16:47,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:16:47,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:16:47,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:16:47,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:16:47,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:16:47,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:16:47,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:16:47,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:16:47,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:16:47,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:16:47,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:16:47,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:16:47,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:16:47,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:16:47,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:16:47,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:16:47,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:16:47,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:16:47,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:16:47,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:16:47,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:16:47,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:16:47,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:16:47,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:16:47,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:16:47,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:16:47,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:16:47,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:16:47,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:16:47,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:16:47,594 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:16:47,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:16:47,595 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:16:47,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:16:47,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:16:47,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:16:47,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:16:47,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:16:47,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:16:47,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:16:47,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:16:47,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:16:47,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:16:47,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:16:47,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:16:47,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:16:47,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:16:47,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:16:47,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:16:47,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:16:47,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:16:47,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:16:47,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:16:47,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:16:47,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:16:47,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:16:47,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:16:47,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:16:47,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:16:47,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:16:47,905 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:16:47,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-07-17 12:16:47,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77931413d/cf0c3c1241f147009c61796b87f18a8a/FLAG28dec4f47 [2020-07-17 12:16:48,443 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:16:48,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-07-17 12:16:48,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77931413d/cf0c3c1241f147009c61796b87f18a8a/FLAG28dec4f47 [2020-07-17 12:16:48,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77931413d/cf0c3c1241f147009c61796b87f18a8a [2020-07-17 12:16:48,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:16:48,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:16:48,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:48,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:16:48,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:16:48,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:48" (1/1) ... [2020-07-17 12:16:48,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783f0603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:48, skipping insertion in model container [2020-07-17 12:16:48,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:48" (1/1) ... [2020-07-17 12:16:48,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:16:48,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:16:49,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:49,091 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:16:49,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:49,124 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:16:49,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49 WrapperNode [2020-07-17 12:16:49,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:49,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:16:49,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:16:49,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:16:49,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... [2020-07-17 12:16:49,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... [2020-07-17 12:16:49,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... [2020-07-17 12:16:49,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... [2020-07-17 12:16:49,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... [2020-07-17 12:16:49,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... [2020-07-17 12:16:49,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... [2020-07-17 12:16:49,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:16:49,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:16:49,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:16:49,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:16:49,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 12:16:49,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:16:49,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:16:49,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:16:49,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:16:49,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:16:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:16:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:16:49,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:16:49,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:16:49,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:16:49,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:16:49,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:16:49,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:16:49,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:16:49,463 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:16:49,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:49 BoogieIcfgContainer [2020-07-17 12:16:49,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:16:49,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:16:49,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:16:49,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:16:49,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:16:48" (1/3) ... [2020-07-17 12:16:49,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177ef0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:49, skipping insertion in model container [2020-07-17 12:16:49,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:49" (2/3) ... [2020-07-17 12:16:49,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177ef0eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:49, skipping insertion in model container [2020-07-17 12:16:49,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:49" (3/3) ... [2020-07-17 12:16:49,491 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-07-17 12:16:49,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:16:49,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:16:49,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:16:49,581 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:16:49,581 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:16:49,581 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:16:49,581 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:16:49,582 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:16:49,582 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:16:49,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:16:49,582 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:16:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-17 12:16:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:16:49,603 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:49,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:49,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:49,609 INFO L82 PathProgramCache]: Analyzing trace with hash 508025261, now seen corresponding path program 1 times [2020-07-17 12:16:49,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:49,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822985296] [2020-07-17 12:16:49,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:49,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822985296] [2020-07-17 12:16:49,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:49,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:16:49,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626017562] [2020-07-17 12:16:49,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:16:49,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:49,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:16:49,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:16:49,810 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-17 12:16:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:49,896 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2020-07-17 12:16:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:16:49,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-17 12:16:49,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:49,908 INFO L225 Difference]: With dead ends: 46 [2020-07-17 12:16:49,908 INFO L226 Difference]: Without dead ends: 25 [2020-07-17 12:16:49,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:16:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-17 12:16:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-07-17 12:16:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-17 12:16:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-17 12:16:49,951 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2020-07-17 12:16:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:49,951 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-17 12:16:49,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:16:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-17 12:16:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 12:16:49,953 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:49,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:49,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:16:49,953 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:49,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:49,954 INFO L82 PathProgramCache]: Analyzing trace with hash -133512762, now seen corresponding path program 1 times [2020-07-17 12:16:49,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:49,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67629391] [2020-07-17 12:16:49,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:50,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67629391] [2020-07-17 12:16:50,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521825400] [2020-07-17 12:16:50,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,068 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-17 12:16:50,074 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:50,114 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:50,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:50,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:50,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-17 12:16:50,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370754413] [2020-07-17 12:16:50,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:16:50,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:50,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:16:50,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:50,173 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-07-17 12:16:50,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:50,245 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-17 12:16:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:16:50,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-17 12:16:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:50,249 INFO L225 Difference]: With dead ends: 30 [2020-07-17 12:16:50,249 INFO L226 Difference]: Without dead ends: 26 [2020-07-17 12:16:50,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:16:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-17 12:16:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2020-07-17 12:16:50,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 12:16:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-17 12:16:50,257 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-17 12:16:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:50,258 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-17 12:16:50,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:16:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 12:16:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 12:16:50,259 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:50,259 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:50,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:16:50,475 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1022031800, now seen corresponding path program 1 times [2020-07-17 12:16:50,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:50,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529304227] [2020-07-17 12:16:50,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:50,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529304227] [2020-07-17 12:16:50,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:50,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 12:16:50,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803011702] [2020-07-17 12:16:50,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 12:16:50,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:50,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 12:16:50,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:16:50,558 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-07-17 12:16:50,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:50,627 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-17 12:16:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:16:50,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-17 12:16:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:50,628 INFO L225 Difference]: With dead ends: 31 [2020-07-17 12:16:50,629 INFO L226 Difference]: Without dead ends: 21 [2020-07-17 12:16:50,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-17 12:16:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-07-17 12:16:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 12:16:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-17 12:16:50,635 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2020-07-17 12:16:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:50,636 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-17 12:16:50,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 12:16:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-17 12:16:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 12:16:50,637 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:50,637 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:50,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:16:50,638 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:50,638 INFO L82 PathProgramCache]: Analyzing trace with hash 996292415, now seen corresponding path program 1 times [2020-07-17 12:16:50,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:50,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310814797] [2020-07-17 12:16:50,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:50,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310814797] [2020-07-17 12:16:50,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:50,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 12:16:50,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292952074] [2020-07-17 12:16:50,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 12:16:50,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:50,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 12:16:50,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:16:50,716 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-07-17 12:16:50,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:50,794 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-07-17 12:16:50,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 12:16:50,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-17 12:16:50,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:50,795 INFO L225 Difference]: With dead ends: 28 [2020-07-17 12:16:50,796 INFO L226 Difference]: Without dead ends: 19 [2020-07-17 12:16:50,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-17 12:16:50,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-17 12:16:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 12:16:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-17 12:16:50,806 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-07-17 12:16:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:50,807 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-17 12:16:50,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 12:16:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-17 12:16:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 12:16:50,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:50,808 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:50,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 12:16:50,809 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:50,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1254457853, now seen corresponding path program 1 times [2020-07-17 12:16:50,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:50,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979366900] [2020-07-17 12:16:50,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:50,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979366900] [2020-07-17 12:16:50,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427261020] [2020-07-17 12:16:50,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:50,916 INFO L264 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-17 12:16:50,918 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:50,951 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:50,953 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:50,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:50,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-07-17 12:16:50,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827068408] [2020-07-17 12:16:50,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 12:16:50,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:50,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 12:16:50,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:16:50,985 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-07-17 12:16:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:51,041 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-17 12:16:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:16:51,042 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-07-17 12:16:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:51,042 INFO L225 Difference]: With dead ends: 19 [2020-07-17 12:16:51,042 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:16:51,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-17 12:16:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:16:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:16:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:16:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:16:51,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-17 12:16:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:51,044 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:16:51,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 12:16:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:16:51,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:16:51,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:51,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:16:51,436 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 12:16:51,436 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:51,436 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:51,437 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:16:51,437 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:16:51,437 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:16:51,437 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:51,437 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 12:16:51,438 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:51,438 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:51,438 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-07-17 12:16:51,438 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-07-17 12:16:51,438 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-17 12:16:51,438 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse1 (<= 0 main_~m~0))) (or (and (<= main_~x~0 0) (<= main_~n~0 0) .cse0 .cse1) (and (<= (+ main_~m~0 1) main_~n~0) .cse0 .cse1))) [2020-07-17 12:16:51,439 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-07-17 12:16:51,439 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2020-07-17 12:16:51,439 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse1 (<= 0 main_~m~0))) (or (and (<= main_~x~0 0) .cse0 (<= main_~m~0 0) .cse1) (and (<= (+ main_~m~0 1) main_~n~0) .cse0 .cse1))) [2020-07-17 12:16:51,443 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0)) (.cse1 (<= 0 main_~m~0))) (or (and (<= main_~x~0 0) (<= main_~n~0 0) .cse0 .cse1) (and (<= (+ main_~m~0 1) main_~n~0) .cse0 .cse1))) [2020-07-17 12:16:51,443 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-07-17 12:16:51,443 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 12:16:51,443 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-17 12:16:51,444 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-17 12:16:51,444 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-17 12:16:51,444 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-17 12:16:51,444 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-17 12:16:51,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:16:51 BoogieIcfgContainer [2020-07-17 12:16:51,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:16:51,486 INFO L168 Benchmark]: Toolchain (without parser) took 2607.04 ms. Allocated memory was 144.7 MB in the beginning and 232.8 MB in the end (delta: 88.1 MB). Free memory was 103.3 MB in the beginning and 155.1 MB in the end (delta: -51.8 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:51,489 INFO L168 Benchmark]: CDTParser took 1.35 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:16:51,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.02 ms. Allocated memory is still 144.7 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:51,497 INFO L168 Benchmark]: Boogie Preprocessor took 110.87 ms. Allocated memory was 144.7 MB in the beginning and 200.3 MB in the end (delta: 55.6 MB). Free memory was 93.0 MB in the beginning and 180.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:51,500 INFO L168 Benchmark]: RCFGBuilder took 230.69 ms. Allocated memory is still 200.3 MB. Free memory was 180.0 MB in the beginning and 166.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:51,501 INFO L168 Benchmark]: TraceAbstraction took 1998.70 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 155.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:51,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.35 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.02 ms. Allocated memory is still 144.7 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.87 ms. Allocated memory was 144.7 MB in the beginning and 200.3 MB in the end (delta: 55.6 MB). Free memory was 93.0 MB in the beginning and 180.0 MB in the end (delta: -87.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.69 ms. Allocated memory is still 200.3 MB. Free memory was 180.0 MB in the beginning and 166.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1998.70 ms. Allocated memory was 200.3 MB in the beginning and 232.8 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 155.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 44.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 17]: Loop Invariant Derived loop invariant: (((x <= 0 && 0 <= x) && m <= 0) && 0 <= m) || ((m + 1 <= n && 0 <= x) && 0 <= m) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 48 SDslu, 260 SDs, 0 SdLazy, 128 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 83 HoareAnnotationTreeSize, 15 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 81 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3648 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 9/13 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...