/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-acceleration/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:33:14,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:14,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:14,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:14,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:14,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:14,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:14,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:14,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:14,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:14,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:14,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:14,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:14,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:14,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:14,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:14,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:14,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:14,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:14,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:14,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:14,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:14,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:14,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:14,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:14,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:33:14,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:33:14,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:33:14,687 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 [2020-07-07 11:33:14,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:14,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:14,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:14,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:14,704 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:14,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:14,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:14,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:14,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:14,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:14,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:14,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:14,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:14,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:14,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:14,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:14,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:14,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:14,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:14,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:14,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:14,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:14,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:14,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:14,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:14,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:14,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:14,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:14,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:14,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:14,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:15,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:15,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:15,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:15,010 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:15,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-07-07 11:33:15,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d167bfe9/de596db6f1f84ae0a015b7b50323542f/FLAG5a6d14307 [2020-07-07 11:33:15,580 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:15,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-07-07 11:33:15,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d167bfe9/de596db6f1f84ae0a015b7b50323542f/FLAG5a6d14307 [2020-07-07 11:33:15,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d167bfe9/de596db6f1f84ae0a015b7b50323542f [2020-07-07 11:33:15,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:15,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:15,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:15,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:15,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:15,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:15" (1/1) ... [2020-07-07 11:33:15,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59897e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:15, skipping insertion in model container [2020-07-07 11:33:15,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:15" (1/1) ... [2020-07-07 11:33:15,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:15,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:16,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:16,161 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:16,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:16,191 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:16,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16 WrapperNode [2020-07-07 11:33:16,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:16,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:16,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:16,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:16,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (1/1) ... [2020-07-07 11:33:16,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (1/1) ... [2020-07-07 11:33:16,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (1/1) ... [2020-07-07 11:33:16,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (1/1) ... [2020-07-07 11:33:16,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (1/1) ... [2020-07-07 11:33:16,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (1/1) ... [2020-07-07 11:33:16,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (1/1) ... [2020-07-07 11:33:16,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:16,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:16,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:16,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:16,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (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 [2020-07-07 11:33:16,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:16,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:16,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:33:16,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:16,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:16,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:16,537 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:16,538 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:33:16,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:16 BoogieIcfgContainer [2020-07-07 11:33:16,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:16,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:16,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:16,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:16,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:15" (1/3) ... [2020-07-07 11:33:16,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b94eb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:16, skipping insertion in model container [2020-07-07 11:33:16,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:16" (2/3) ... [2020-07-07 11:33:16,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b94eb67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:16, skipping insertion in model container [2020-07-07 11:33:16,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:16" (3/3) ... [2020-07-07 11:33:16,556 INFO L109 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2020-07-07 11:33:16,567 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:16,574 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:16,588 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:16,612 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:16,612 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:16,613 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:16,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:16,615 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:16,615 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:16,615 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:16,615 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-07 11:33:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:33:16,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:16,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:16,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-07-07 11:33:16,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:16,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322168683] [2020-07-07 11:33:16,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:16,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322168683] [2020-07-07 11:33:16,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:16,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:33:16,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247749240] [2020-07-07 11:33:16,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:33:16,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:16,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:33:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:33:16,884 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-07-07 11:33:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:17,053 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-07 11:33:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:33:17,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-07 11:33:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:17,073 INFO L225 Difference]: With dead ends: 29 [2020-07-07 11:33:17,077 INFO L226 Difference]: Without dead ends: 12 [2020-07-07 11:33:17,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:33:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-07 11:33:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-07 11:33:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-07 11:33:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-07 11:33:17,147 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-07 11:33:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:17,148 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-07 11:33:17,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:33:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-07 11:33:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 11:33:17,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:17,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:17,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:17,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2020-07-07 11:33:17,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:17,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32845685] [2020-07-07 11:33:17,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:17,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:17,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32845685] [2020-07-07 11:33:17,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134263248] [2020-07-07 11:33:17,335 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 [2020-07-07 11:33:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:17,370 INFO L264 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-07 11:33:17,378 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:17,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:17,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-07 11:33:17,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417263931] [2020-07-07 11:33:17,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:17,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:17,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:17,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:17,460 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2020-07-07 11:33:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:17,491 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-07 11:33:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:33:17,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-07 11:33:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:17,493 INFO L225 Difference]: With dead ends: 18 [2020-07-07 11:33:17,493 INFO L226 Difference]: Without dead ends: 13 [2020-07-07 11:33:17,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-07 11:33:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-07 11:33:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-07 11:33:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-07 11:33:17,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-07-07 11:33:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:17,500 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-07 11:33:17,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-07 11:33:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 11:33:17,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:17,502 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:17,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:33:17,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:17,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:17,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2020-07-07 11:33:17,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:17,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318598045] [2020-07-07 11:33:17,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:17,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318598045] [2020-07-07 11:33:17,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570503387] [2020-07-07 11:33:17,834 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:17,877 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:17,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:17,880 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:33:17,882 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:17,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:17,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-07 11:33:17,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025071921] [2020-07-07 11:33:17,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:17,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:17,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:17,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:17,920 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-07-07 11:33:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:17,944 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-07 11:33:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:33:17,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-07-07 11:33:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:17,945 INFO L225 Difference]: With dead ends: 19 [2020-07-07 11:33:17,945 INFO L226 Difference]: Without dead ends: 14 [2020-07-07 11:33:17,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-07 11:33:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-07 11:33:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-07 11:33:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-07 11:33:17,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-07 11:33:17,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:17,951 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-07 11:33:17,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-07 11:33:17,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:33:17,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:17,952 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:18,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:18,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:18,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:18,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2020-07-07 11:33:18,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:18,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594830975] [2020-07-07 11:33:18,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:18,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594830975] [2020-07-07 11:33:18,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611811670] [2020-07-07 11:33:18,296 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-07-07 11:33:18,339 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-07 11:33:18,339 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:18,340 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-07 11:33:18,342 INFO L287 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-07 11:33:18,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:33:18,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-07-07 11:33:18,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274564421] [2020-07-07 11:33:18,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:18,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:18,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:18,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:33:18,394 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2020-07-07 11:33:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:18,420 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-07-07 11:33:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:33:18,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-07 11:33:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:18,421 INFO L225 Difference]: With dead ends: 14 [2020-07-07 11:33:18,421 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:33:18,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:33:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:33:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:33:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:33:18,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-07 11:33:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:18,425 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:33:18,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:33:18,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:33:18,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:18,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:33:18,685 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:33:18,685 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:18,686 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:18,686 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:33:18,686 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:33:18,686 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:18,687 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2020-07-07 11:33:18,687 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2020-07-07 11:33:18,687 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2020-07-07 11:33:18,687 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (= 0 main_~x~0) (and (<= 0 main_~y~0) (<= main_~y~0 0))) [2020-07-07 11:33:18,687 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (= 0 main_~x~0) [2020-07-07 11:33:18,688 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-07 11:33:18,688 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-07 11:33:18,688 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-07 11:33:18,688 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:33:18,688 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-07 11:33:18,689 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-07 11:33:18,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:18 BoogieIcfgContainer [2020-07-07 11:33:18,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:18,736 INFO L168 Benchmark]: Toolchain (without parser) took 2788.16 ms. Allocated memory was 136.8 MB in the beginning and 230.7 MB in the end (delta: 93.8 MB). Free memory was 99.8 MB in the beginning and 201.0 MB in the end (delta: -101.3 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:18,737 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 136.8 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 11:33:18,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.74 ms. Allocated memory is still 136.8 MB. Free memory was 99.8 MB in the beginning and 90.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:18,744 INFO L168 Benchmark]: Boogie Preprocessor took 107.82 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 180.1 MB in the end (delta: -89.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:18,746 INFO L168 Benchmark]: RCFGBuilder took 241.62 ms. Allocated memory is still 200.3 MB. Free memory was 180.1 MB in the beginning and 167.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:18,748 INFO L168 Benchmark]: TraceAbstraction took 2184.24 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 167.8 MB in the beginning and 201.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:18,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 136.8 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.74 ms. Allocated memory is still 136.8 MB. Free memory was 99.8 MB in the beginning and 90.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.82 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 180.1 MB in the end (delta: -89.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 241.62 ms. Allocated memory is still 200.3 MB. Free memory was 180.1 MB in the beginning and 167.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2184.24 ms. Allocated memory was 200.3 MB in the beginning and 230.7 MB in the end (delta: 30.4 MB). Free memory was 167.8 MB in the beginning and 201.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 90.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 == x || (0 <= y && y <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 1 SDslu, 76 SDs, 0 SdLazy, 29 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 19 HoareAnnotationTreeSize, 10 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 82 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2053 SizeOfPredicates, 4 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 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...