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/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:15:40,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:15:40,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:15:40,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:15:40,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:15:40,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:15:40,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:15:40,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:15:40,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:15:40,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:15:40,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:15:40,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:15:40,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:15:40,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:15:40,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:15:40,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:15:40,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:15:40,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:15:40,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:15:40,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:15:40,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:15:40,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:15:40,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:15:40,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:15:40,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:15:40,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:15:40,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:15:40,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:15:40,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:15:40,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:15:40,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:15:40,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:15:40,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:15:40,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:15:40,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:15:40,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:15:40,832 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 [2019-10-14 23:15:40,850 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:15:40,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:15:40,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:15:40,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:15:40,854 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:15:40,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:15:40,854 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:15:40,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:15:40,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:15:40,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:15:40,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:15:40,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:15:40,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:15:40,857 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:15:40,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:15:40,857 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:15:40,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:15:40,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:15:40,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:15:40,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:15:40,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:15:40,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:15:40,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:15:40,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:15:40,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:15:40,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:15:40,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:15:40,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:15:40,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:15:41,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:15:41,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:15:41,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:15:41,142 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:15:41,143 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:15:41,143 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-10-14 23:15:41,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f4f52b7/f7c8863c71e84ec799bbcb5022497889/FLAG0c866a64d [2019-10-14 23:15:41,682 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:15:41,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2019-10-14 23:15:41,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f4f52b7/f7c8863c71e84ec799bbcb5022497889/FLAG0c866a64d [2019-10-14 23:15:42,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21f4f52b7/f7c8863c71e84ec799bbcb5022497889 [2019-10-14 23:15:42,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:15:42,063 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:15:42,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:42,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:15:42,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:15:42,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321dbed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42, skipping insertion in model container [2019-10-14 23:15:42,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,081 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:15:42,096 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:15:42,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:42,289 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:15:42,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:42,317 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:15:42,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42 WrapperNode [2019-10-14 23:15:42,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:42,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:15:42,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:15:42,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:15:42,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (1/1) ... [2019-10-14 23:15:42,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:15:42,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:15:42,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:15:42,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:15:42,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (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 [2019-10-14 23:15:42,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:15:42,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:15:42,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:15:42,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:15:42,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:15:42,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:15:42,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:15:42,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:15:42,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:15:42,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:15:42,661 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:15:42,661 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:15:42,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:42 BoogieIcfgContainer [2019-10-14 23:15:42,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:15:42,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:15:42,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:15:42,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:15:42,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:15:42" (1/3) ... [2019-10-14 23:15:42,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09051c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:42, skipping insertion in model container [2019-10-14 23:15:42,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:42" (2/3) ... [2019-10-14 23:15:42,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d09051c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:42, skipping insertion in model container [2019-10-14 23:15:42,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:42" (3/3) ... [2019-10-14 23:15:42,671 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2019-10-14 23:15:42,685 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:15:42,698 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:15:42,717 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:15:42,746 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:15:42,746 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:15:42,746 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:15:42,746 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:15:42,747 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:15:42,747 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:15:42,747 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:15:42,747 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:15:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-14 23:15:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:15:42,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:42,780 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:42,782 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:42,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1883805102, now seen corresponding path program 1 times [2019-10-14 23:15:42,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:42,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318198519] [2019-10-14 23:15:42,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:42,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:42,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:43,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318198519] [2019-10-14 23:15:43,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:43,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:15:43,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053920960] [2019-10-14 23:15:43,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:15:43,046 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:43,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:15:43,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:15:43,062 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2019-10-14 23:15:43,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:43,243 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-10-14 23:15:43,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:15:43,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-10-14 23:15:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:43,255 INFO L225 Difference]: With dead ends: 33 [2019-10-14 23:15:43,255 INFO L226 Difference]: Without dead ends: 16 [2019-10-14 23:15:43,259 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:15:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-14 23:15:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-14 23:15:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-14 23:15:43,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-10-14 23:15:43,298 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2019-10-14 23:15:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:43,299 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-10-14 23:15:43,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:15:43,299 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-10-14 23:15:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:15:43,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:43,300 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:43,301 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:43,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:43,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2141584271, now seen corresponding path program 1 times [2019-10-14 23:15:43,302 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:43,302 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533449147] [2019-10-14 23:15:43,302 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:43,303 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:43,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:43,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533449147] [2019-10-14 23:15:43,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416007568] [2019-10-14 23:15:43,427 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 [2019-10-14 23:15:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:43,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-14 23:15:43,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:43,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:43,637 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:43,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-10-14 23:15:43,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141046154] [2019-10-14 23:15:43,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:15:43,641 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:43,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:15:43,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:15:43,643 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2019-10-14 23:15:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:43,825 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-14 23:15:43,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:15:43,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-10-14 23:15:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:43,826 INFO L225 Difference]: With dead ends: 19 [2019-10-14 23:15:43,827 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:15:43,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:15:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:15:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:15:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:15:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:15:43,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-14 23:15:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:43,830 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:15:43,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:15:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:15:43,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:15:44,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:44,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:15:44,107 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:15:44,108 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2019-10-14 23:15:44,108 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:44,108 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:44,108 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:15:44,108 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:15:44,108 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:15:44,118 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 9 69) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2019-10-14 23:15:44,118 INFO L443 ceAbstractionStarter]: For program point L27(lines 27 66) no Hoare annotation was computed. [2019-10-14 23:15:44,119 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 9 69) no Hoare annotation was computed. [2019-10-14 23:15:44,119 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 67) no Hoare annotation was computed. [2019-10-14 23:15:44,119 INFO L443 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2019-10-14 23:15:44,119 INFO L443 ceAbstractionStarter]: For program point L50(lines 50 59) no Hoare annotation was computed. [2019-10-14 23:15:44,119 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 68) no Hoare annotation was computed. [2019-10-14 23:15:44,119 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 9 69) no Hoare annotation was computed. [2019-10-14 23:15:44,120 INFO L439 ceAbstractionStarter]: At program point L41(lines 28 62) the Hoare annotation is: (or (and (<= (+ (div (+ (- main_~main__x~0) (- 2)) (- 2)) 1) main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0)) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2019-10-14 23:15:44,120 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2019-10-14 23:15:44,120 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 61) no Hoare annotation was computed. [2019-10-14 23:15:44,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:15:44 BoogieIcfgContainer [2019-10-14 23:15:44,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:15:44,138 INFO L168 Benchmark]: Toolchain (without parser) took 2074.70 ms. Allocated memory was 138.9 MB in the beginning and 235.4 MB in the end (delta: 96.5 MB). Free memory was 103.5 MB in the beginning and 205.9 MB in the end (delta: -102.4 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:44,141 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-14 23:15:44,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.69 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:44,145 INFO L168 Benchmark]: Boogie Preprocessor took 96.37 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.8 MB in the beginning and 182.3 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:44,146 INFO L168 Benchmark]: RCFGBuilder took 247.84 ms. Allocated memory is still 202.9 MB. Free memory was 182.3 MB in the beginning and 170.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:44,147 INFO L168 Benchmark]: TraceAbstraction took 1471.36 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 170.0 MB in the beginning and 205.9 MB in the end (delta: -36.0 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:44,153 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.69 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.37 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.8 MB in the beginning and 182.3 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 247.84 ms. Allocated memory is still 202.9 MB. Free memory was 182.3 MB in the beginning and 170.0 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1471.36 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 170.0 MB in the beginning and 205.9 MB in the end (delta: -36.0 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 52]: 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: 28]: Loop Invariant Derived loop invariant: ((-main__x + -2) / -2 + 1 <= main__y && main__x + 2 <= main__y) || main__x + 51 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 23 SDslu, 84 SDs, 0 SdLazy, 82 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 41 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1928 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...