/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:46:16,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:46:16,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:46:16,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:46:16,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:46:16,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:46:16,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:46:16,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:46:16,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:46:16,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:46:16,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:46:16,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:46:16,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:46:16,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:46:16,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:46:16,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:46:16,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:46:16,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:46:16,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:46:16,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:46:16,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:46:16,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:46:16,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:46:16,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:46:16,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:46:16,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:46:16,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:46:16,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:46:16,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:46:16,185 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:46:16,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:46:16,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:46:16,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:46:16,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:46:16,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:46:16,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:46:16,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:46:16,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:46:16,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:46:16,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:46:16,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:46:16,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:46:16,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:46:16,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:46:16,192 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:46:16,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:46:16,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:46:16,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:46:16,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:46:16,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:46:16,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:46:16,194 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:46:16,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:46:16,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:46:16,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:46:16,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:46:16,661 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:46:16,662 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-04 17:46:16,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b84eb88/71bd9c29dbde44e3b922403402c01e70/FLAGd06dfe711 [2020-09-04 17:46:17,338 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:46:17,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-04 17:46:17,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b84eb88/71bd9c29dbde44e3b922403402c01e70/FLAGd06dfe711 [2020-09-04 17:46:17,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b84eb88/71bd9c29dbde44e3b922403402c01e70 [2020-09-04 17:46:17,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:46:17,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:46:17,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:46:17,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:46:17,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:46:17,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:17,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a5289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17, skipping insertion in model container [2020-09-04 17:46:17,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:17,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:46:17,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:46:17,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:46:17,941 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:46:17,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:46:17,982 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:46:17,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17 WrapperNode [2020-09-04 17:46:17,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:46:17,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:46:17,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:46:17,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:46:18,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:18,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:18,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:18,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:18,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:18,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:18,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... [2020-09-04 17:46:18,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:46:18,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:46:18,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:46:18,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:46:18,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:46:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:46:18,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:46:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:46:18,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:46:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:46:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 17:46:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:46:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:46:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:46:18,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:46:18,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:46:18,413 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:46:18,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:46:18 BoogieIcfgContainer [2020-09-04 17:46:18,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:46:18,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:46:18,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:46:18,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:46:18,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:46:17" (1/3) ... [2020-09-04 17:46:18,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb1f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:46:18, skipping insertion in model container [2020-09-04 17:46:18,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:46:17" (2/3) ... [2020-09-04 17:46:18,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb1f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:46:18, skipping insertion in model container [2020-09-04 17:46:18,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:46:18" (3/3) ... [2020-09-04 17:46:18,435 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-09-04 17:46:18,454 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:46:18,469 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:46:18,497 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:46:18,529 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:46:18,529 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:46:18,529 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:46:18,529 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:46:18,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:46:18,544 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:46:18,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:46:18,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:46:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-04 17:46:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 17:46:18,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:46:18,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:46:18,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:46:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:46:18,588 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-09-04 17:46:18,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:46:18,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101307634] [2020-09-04 17:46:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:46:18,670 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:46:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:46:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:46:18,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101307634] [2020-09-04 17:46:18,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:46:18,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 17:46:18,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401714127] [2020-09-04 17:46:18,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 17:46:18,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:46:18,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 17:46:18,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:46:18,775 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-09-04 17:46:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:46:18,810 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-09-04 17:46:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 17:46:18,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-04 17:46:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:46:18,823 INFO L225 Difference]: With dead ends: 36 [2020-09-04 17:46:18,824 INFO L226 Difference]: Without dead ends: 19 [2020-09-04 17:46:18,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:46:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-04 17:46:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-04 17:46:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 17:46:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-04 17:46:18,881 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-09-04 17:46:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:46:18,882 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-04 17:46:18,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 17:46:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-04 17:46:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 17:46:18,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:46:18,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:46:18,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:46:18,884 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:46:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:46:18,885 INFO L82 PathProgramCache]: Analyzing trace with hash 667863095, now seen corresponding path program 1 times [2020-09-04 17:46:18,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:46:18,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803601922] [2020-09-04 17:46:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:46:18,887 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:46:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:46:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:46:19,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803601922] [2020-09-04 17:46:19,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:46:19,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:46:19,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735409552] [2020-09-04 17:46:19,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:46:19,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:46:19,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:46:19,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:46:19,103 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-09-04 17:46:19,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:46:19,194 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-04 17:46:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 17:46:19,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-04 17:46:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:46:19,196 INFO L225 Difference]: With dead ends: 27 [2020-09-04 17:46:19,196 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 17:46:19,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:46:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 17:46:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-04 17:46:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-04 17:46:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-09-04 17:46:19,206 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-09-04 17:46:19,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:46:19,206 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-09-04 17:46:19,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:46:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-09-04 17:46:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 17:46:19,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:46:19,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:46:19,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:46:19,210 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:46:19,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:46:19,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1021038377, now seen corresponding path program 1 times [2020-09-04 17:46:19,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:46:19,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475198639] [2020-09-04 17:46:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:46:19,244 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:46:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:21,719 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-09-04 17:46:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:46:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:46:22,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475198639] [2020-09-04 17:46:22,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:46:22,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:46:22,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406959931] [2020-09-04 17:46:22,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:46:22,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:46:22,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:46:22,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:46:22,098 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2020-09-04 17:46:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:46:22,724 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-09-04 17:46:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 17:46:22,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-09-04 17:46:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:46:22,728 INFO L225 Difference]: With dead ends: 34 [2020-09-04 17:46:22,728 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 17:46:22,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-04 17:46:22,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 17:46:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-04 17:46:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-04 17:46:22,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-04 17:46:22,748 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2020-09-04 17:46:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:46:22,748 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-04 17:46:22,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:46:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-04 17:46:22,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 17:46:22,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:46:22,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:46:22,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:46:22,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:46:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:46:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash 354800695, now seen corresponding path program 2 times [2020-09-04 17:46:22,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:46:22,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620003827] [2020-09-04 17:46:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:46:22,762 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:46:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:46:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:46:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:46:22,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620003827] [2020-09-04 17:46:22,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:46:22,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:46:22,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256594239] [2020-09-04 17:46:22,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:46:22,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:46:22,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:46:22,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:46:22,965 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2020-09-04 17:46:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:46:23,086 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-04 17:46:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 17:46:23,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-04 17:46:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:46:23,087 INFO L225 Difference]: With dead ends: 27 [2020-09-04 17:46:23,087 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 17:46:23,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-04 17:46:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 17:46:23,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 17:46:23,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 17:46:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 17:46:23,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-04 17:46:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:46:23,090 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 17:46:23,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:46:23,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 17:46:23,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 17:46:23,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:46:23,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 17:46:23,263 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:46:23,264 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:46:23,264 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 17:46:23,264 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 17:46:23,264 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 17:46:23,264 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 17:46:23,264 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2020-09-04 17:46:23,265 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 21) the Hoare annotation is: true [2020-09-04 17:46:23,265 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) [2020-09-04 17:46:23,265 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-09-04 17:46:23,265 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post2| 1)) (.cse1 (+ main_~y~0 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (<= .cse1 main_~x~0) (<= main_~x~0 .cse1))) [2020-09-04 17:46:23,266 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (and (<= |main_#t~post1| main_~y~0) (= main_~y~0 main_~x~0) (<= main_~y~0 |main_#t~post1|)) [2020-09-04 17:46:23,266 INFO L264 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post2| 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (= main_~y~0 main_~x~0))) [2020-09-04 17:46:23,266 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (<= |main_#t~post1| main_~y~0) (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (<= main_~y~0 |main_#t~post1|))) [2020-09-04 17:46:23,266 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-04 17:46:23,266 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-09-04 17:46:23,267 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 11 21) the Hoare annotation is: true [2020-09-04 17:46:23,267 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-09-04 17:46:23,267 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~x~0 4294967296)))) (.cse0 (+ main_~x~0 (* 4294967296 (div main_~y~0 4294967296))))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 17:46:23,267 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-04 17:46:23,267 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 4 9) the Hoare annotation is: true [2020-09-04 17:46:23,268 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:46:23,268 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 17:46:23,268 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 17:46:23,268 INFO L271 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2020-09-04 17:46:23,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:46:23 BoogieIcfgContainer [2020-09-04 17:46:23,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:46:23,298 INFO L168 Benchmark]: Toolchain (without parser) took 5630.36 ms. Allocated memory was 145.2 MB in the beginning and 234.9 MB in the end (delta: 89.7 MB). Free memory was 101.0 MB in the beginning and 144.9 MB in the end (delta: -43.9 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:23,299 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:46:23,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.09 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 91.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:23,301 INFO L168 Benchmark]: Boogie Preprocessor took 124.17 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 182.1 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:23,302 INFO L168 Benchmark]: RCFGBuilder took 310.40 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 170.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:23,304 INFO L168 Benchmark]: TraceAbstraction took 4875.48 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 169.6 MB in the beginning and 144.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:46:23,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.09 ms. Allocated memory is still 145.2 MB. Free memory was 100.8 MB in the beginning and 91.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.17 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 91.4 MB in the beginning and 182.1 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.40 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 170.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4875.48 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 169.6 MB in the beginning and 144.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 15]: Loop Invariant Derived loop invariant: y == x - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 14 SDslu, 158 SDs, 0 SdLazy, 138 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 43 PreInvPairs, 64 NumberOfFragments, 138 HoareAnnotationTreeSize, 43 FomulaSimplifications, 336 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 25 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...