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/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:05,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:05,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:05,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:05,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:05,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:05,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:05,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:05,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:05,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:05,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:05,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:05,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:05,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:05,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:05,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:05,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:05,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:05,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:05,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:05,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:05,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:05,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:05,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:05,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:17:05,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:05,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:05,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:05,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:05,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:05,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:05,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:05,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:05,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:05,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:05,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:05,797 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 23:17:05,814 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:05,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:05,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:05,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:05,817 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:05,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:05,817 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:05,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:05,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:05,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:05,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:05,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:05,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:05,820 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:05,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:05,820 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:05,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:05,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:05,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:05,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:05,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:05,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:05,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:05,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:05,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:05,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:05,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:05,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:05,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:06,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:06,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:06,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:06,135 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:06,136 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:06,136 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2019-10-14 23:17:06,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c631c3d59/6e84b414ff4741328ac79ba2fdf90422/FLAGf5972b896 [2019-10-14 23:17:06,688 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:06,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2019-10-14 23:17:06,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c631c3d59/6e84b414ff4741328ac79ba2fdf90422/FLAGf5972b896 [2019-10-14 23:17:07,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c631c3d59/6e84b414ff4741328ac79ba2fdf90422 [2019-10-14 23:17:07,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:07,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:07,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:07,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:07,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:07,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fbe232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07, skipping insertion in model container [2019-10-14 23:17:07,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,118 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:07,131 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:07,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:07,286 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:07,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:07,313 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:07,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07 WrapperNode [2019-10-14 23:17:07,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:07,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:07,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:07,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:07,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (1/1) ... [2019-10-14 23:17:07,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:07,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:07,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:07,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:07,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (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 23:17:07,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-14 23:17:07,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:07,484 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-14 23:17:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:07,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:07,622 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:07,623 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:17:07,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:07 BoogieIcfgContainer [2019-10-14 23:17:07,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:07,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:07,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:07,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:07" (1/3) ... [2019-10-14 23:17:07,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e04f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:07, skipping insertion in model container [2019-10-14 23:17:07,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:07" (2/3) ... [2019-10-14 23:17:07,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e04f60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:07, skipping insertion in model container [2019-10-14 23:17:07,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:07" (3/3) ... [2019-10-14 23:17:07,638 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2019-10-14 23:17:07,651 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:07,666 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:07,684 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:07,723 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:07,723 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:07,724 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:07,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:07,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:07,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:07,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:07,735 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-14 23:17:07,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:07,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:07,766 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:07,768 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times [2019-10-14 23:17:07,787 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:07,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411828789] [2019-10-14 23:17:07,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,788 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:07,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:07,926 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 23:17:07,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411828789] [2019-10-14 23:17:07,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:07,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:17:07,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406016487] [2019-10-14 23:17:07,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:17:07,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:07,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:17:07,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:17:07,946 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-14 23:17:08,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:08,010 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2019-10-14 23:17:08,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:17:08,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-14 23:17:08,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:08,023 INFO L225 Difference]: With dead ends: 37 [2019-10-14 23:17:08,024 INFO L226 Difference]: Without dead ends: 19 [2019-10-14 23:17:08,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:17:08,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-14 23:17:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-10-14 23:17:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-14 23:17:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-14 23:17:08,076 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-10-14 23:17:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:08,076 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-14 23:17:08,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:17:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-14 23:17:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:17:08,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:08,080 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:08,081 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:08,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times [2019-10-14 23:17:08,083 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:08,083 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30424640] [2019-10-14 23:17:08,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:08,083 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:08,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:08,189 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 23:17:08,189 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30424640] [2019-10-14 23:17:08,190 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:08,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:17:08,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097053907] [2019-10-14 23:17:08,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:17:08,193 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:08,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:17:08,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:08,194 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2019-10-14 23:17:08,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:08,300 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-14 23:17:08,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:17:08,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-10-14 23:17:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:08,302 INFO L225 Difference]: With dead ends: 17 [2019-10-14 23:17:08,302 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:17:08,304 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:17:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:17:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:17:08,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:17:08,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:17:08,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-14 23:17:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:08,307 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:17:08,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:17:08,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:17:08,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:17:08,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:17:08,446 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,447 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2019-10-14 23:17:08,447 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,447 INFO L439 ceAbstractionStarter]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= 0 |old(~x~0)|))) [2019-10-14 23:17:08,447 INFO L443 ceAbstractionStarter]: For program point L14-1(lines 12 19) no Hoare annotation was computed. [2019-10-14 23:17:08,448 INFO L443 ceAbstractionStarter]: For program point evalEXIT(lines 12 19) no Hoare annotation was computed. [2019-10-14 23:17:08,448 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,449 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= 0 ~x~0) [2019-10-14 23:17:08,449 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:17:08,450 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:17:08,450 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-10-14 23:17:08,450 INFO L439 ceAbstractionStarter]: At program point L27(lines 22 33) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= 0 |old(~x~0)|))) [2019-10-14 23:17:08,450 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= 0 |old(~x~0)|))) [2019-10-14 23:17:08,451 INFO L439 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= 0 |old(~x~0)|))) [2019-10-14 23:17:08,451 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 22 33) no Hoare annotation was computed. [2019-10-14 23:17:08,452 INFO L439 ceAbstractionStarter]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2019-10-14 23:17:08,452 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 22 33) no Hoare annotation was computed. [2019-10-14 23:17:08,452 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:17:08,453 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:17:08,454 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:17:08,455 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:17:08,458 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:17:08,459 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:17:08,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:08 BoogieIcfgContainer [2019-10-14 23:17:08,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:08,478 INFO L168 Benchmark]: Toolchain (without parser) took 1373.63 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 122.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,480 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.9 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. [2019-10-14 23:17:08,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.36 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,482 INFO L168 Benchmark]: Boogie Preprocessor took 104.28 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,484 INFO L168 Benchmark]: RCFGBuilder took 205.57 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 169.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,485 INFO L168 Benchmark]: TraceAbstraction took 848.83 ms. Allocated memory is still 201.3 MB. Free memory was 169.9 MB in the beginning and 122.7 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:08,496 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.9 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 210.36 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.28 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 205.57 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 169.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 848.83 ms. Allocated memory is still 201.3 MB. Free memory was 169.9 MB in the beginning and 122.7 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 29 SDtfs, 23 SDslu, 26 SDs, 0 SdLazy, 14 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 44 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 34 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...