/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/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:16:51,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:16:51,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:16:51,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:16:51,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:16:51,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:16:51,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:16:51,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:16:51,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:16:51,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:16:51,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:16:51,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:16:51,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:16:51,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:16:51,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:16:51,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:16:51,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:16:51,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:16:51,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:16:51,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:16:51,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:16:51,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:16:51,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:16:51,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:16:51,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:16:51,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:16:51,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:16:51,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:16:51,794 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 12:16:51,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:16:51,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:16:51,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:16:51,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:16:51,822 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:16:51,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:16:51,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:16:51,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:16:51,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:16:51,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:16:51,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:16:51,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:16:51,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:16:51,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:16:51,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:16:51,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:16:51,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:16:51,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:16:51,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:16:51,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:16:51,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:16:51,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:16:51,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:16:51,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:16:51,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:16:51,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:16:51,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:16:51,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:16:51,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:16:51,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:16:52,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:16:52,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:16:52,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:16:52,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:16:52,115 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:16:52,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-17 12:16:52,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66cc7f30/7f9be9bf20b546baa05002601adfc01d/FLAG9f7125b64 [2020-07-17 12:16:52,644 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:16:52,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-07-17 12:16:52,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66cc7f30/7f9be9bf20b546baa05002601adfc01d/FLAG9f7125b64 [2020-07-17 12:16:53,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a66cc7f30/7f9be9bf20b546baa05002601adfc01d [2020-07-17 12:16:53,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:16:53,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:16:53,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:53,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:16:53,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:16:53,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5bc051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53, skipping insertion in model container [2020-07-17 12:16:53,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:16:53,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:16:53,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:53,281 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:16:53,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:53,312 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:16:53,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53 WrapperNode [2020-07-17 12:16:53,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:53,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:16:53,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:16:53,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:16:53,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (1/1) ... [2020-07-17 12:16:53,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:16:53,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:16:53,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:16:53,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:16:53,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (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 12:16:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:16:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:16:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:16:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:16:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:16:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:16:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:16:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:16:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:16:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:16:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:16:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:16:53,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:16:53,688 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:16:53,688 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:16:53,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:53 BoogieIcfgContainer [2020-07-17 12:16:53,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:16:53,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:16:53,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:16:53,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:16:53,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:16:53" (1/3) ... [2020-07-17 12:16:53,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:53, skipping insertion in model container [2020-07-17 12:16:53,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:53" (2/3) ... [2020-07-17 12:16:53,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eda39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:53, skipping insertion in model container [2020-07-17 12:16:53,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:53" (3/3) ... [2020-07-17 12:16:53,701 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-07-17 12:16:53,710 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:16:53,718 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:16:53,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:16:53,768 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:16:53,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:16:53,768 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:16:53,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:16:53,769 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:16:53,769 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:16:53,769 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:16:53,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:16:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-17 12:16:53,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 12:16:53,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:53,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:53,796 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:53,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash -42161200, now seen corresponding path program 1 times [2020-07-17 12:16:53,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:53,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315403556] [2020-07-17 12:16:53,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:54,161 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 12:16:54,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315403556] [2020-07-17 12:16:54,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:54,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 12:16:54,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786708893] [2020-07-17 12:16:54,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:16:54,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:54,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:16:54,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:16:54,187 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 7 states. [2020-07-17 12:16:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:54,335 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2020-07-17 12:16:54,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 12:16:54,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-07-17 12:16:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:54,347 INFO L225 Difference]: With dead ends: 46 [2020-07-17 12:16:54,347 INFO L226 Difference]: Without dead ends: 14 [2020-07-17 12:16:54,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:16:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-17 12:16:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-17 12:16:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-17 12:16:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-17 12:16:54,390 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-17 12:16:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:54,390 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-17 12:16:54,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:16:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 12:16:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 12:16:54,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:54,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:54,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:16:54,393 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash 219103455, now seen corresponding path program 1 times [2020-07-17 12:16:54,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:54,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046070997] [2020-07-17 12:16:54,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:54,560 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 12:16:54,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046070997] [2020-07-17 12:16:54,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931074176] [2020-07-17 12:16:54,561 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 12:16:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:54,594 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-17 12:16:54,601 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:54,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-17 12:16:54,735 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 12:16:54,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:54,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-17 12:16:54,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565292827] [2020-07-17 12:16:54,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 12:16:54,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:54,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 12:16:54,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-17 12:16:54,740 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2020-07-17 12:16:54,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:54,889 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-07-17 12:16:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 12:16:54,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-07-17 12:16:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:54,890 INFO L225 Difference]: With dead ends: 17 [2020-07-17 12:16:54,890 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:16:54,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-07-17 12:16:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:16:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:16:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:16:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:16:54,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-17 12:16:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:54,893 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:16:54,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 12:16:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:16:54,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:16:55,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:16:55,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:16:55,190 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 12:16:55,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:55,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:55,190 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:16:55,190 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:16:55,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:16:55,191 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:55,191 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 12:16:55,191 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:55,191 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 12:16:55,192 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 28) the Hoare annotation is: true [2020-07-17 12:16:55,192 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~y~0 0) (< 0 (+ main_~y~0 1))) [2020-07-17 12:16:55,193 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 28) no Hoare annotation was computed. [2020-07-17 12:16:55,193 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-07-17 12:16:55,194 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 23) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 12:16:55,194 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-17 12:16:55,194 INFO L268 CegarLoopResult]: For program point L20-3(lines 13 28) no Hoare annotation was computed. [2020-07-17 12:16:55,195 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 28) no Hoare annotation was computed. [2020-07-17 12:16:55,199 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 12:16:55,200 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-17 12:16:55,200 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-17 12:16:55,200 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-17 12:16:55,200 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-17 12:16:55,200 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-17 12:16:55,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:16:55 BoogieIcfgContainer [2020-07-17 12:16:55,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:16:55,229 INFO L168 Benchmark]: Toolchain (without parser) took 2148.92 ms. Allocated memory was 137.9 MB in the beginning and 233.3 MB in the end (delta: 95.4 MB). Free memory was 101.1 MB in the beginning and 180.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:55,230 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 12:16:55,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.96 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:55,233 INFO L168 Benchmark]: Boogie Preprocessor took 108.60 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:55,235 INFO L168 Benchmark]: RCFGBuilder took 270.49 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 166.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:55,237 INFO L168 Benchmark]: TraceAbstraction took 1531.32 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 166.1 MB in the beginning and 180.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:55,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.96 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.60 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.7 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 270.49 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 166.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1531.32 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 166.1 MB in the beginning and 180.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 18.6 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: 20]: Loop Invariant Derived loop invariant: x + j <= i + y && i + y <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 25 SDslu, 123 SDs, 0 SdLazy, 85 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 29 HoareAnnotationTreeSize, 10 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 2343 SizeOfPredicates, 5 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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...