/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/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:54:24,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:54:24,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:54:24,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:54:24,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:54:24,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:54:24,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:54:24,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:54:24,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:54:24,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:54:24,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:54:24,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:54:24,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:54:24,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:54:24,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:54:24,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:54:24,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:54:24,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:54:24,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:54:24,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:54:24,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:54:24,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:54:24,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:54:24,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:54:24,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:54:24,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:54:24,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:54:24,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:54:24,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:54:24,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:54:24,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:54:24,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:54:24,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:54:24,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:54:24,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:54:24,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:54:24,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:54:24,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:54:24,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:54:24,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:54:24,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:54:24,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:54:24,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:54:24,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:54:24,295 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:54:24,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:54:24,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:54:24,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:54:24,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:54:24,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:54:24,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:54:24,301 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:54:24,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:54:24,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:54:24,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:54:24,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:54:24,609 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:54:24,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-17 14:54:24,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6db7b6aa/06971501a80f47d7bac299bb129feaa4/FLAG96998d973 [2020-07-17 14:54:25,181 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:54:25,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2020-07-17 14:54:25,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6db7b6aa/06971501a80f47d7bac299bb129feaa4/FLAG96998d973 [2020-07-17 14:54:25,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6db7b6aa/06971501a80f47d7bac299bb129feaa4 [2020-07-17 14:54:25,563 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:54:25,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:54:25,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:25,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:54:25,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:54:25,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6896fb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25, skipping insertion in model container [2020-07-17 14:54:25,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:54:25,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:54:25,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:25,772 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:54:25,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:25,804 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:54:25,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25 WrapperNode [2020-07-17 14:54:25,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:25,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:54:25,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:54:25,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:54:25,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... [2020-07-17 14:54:25,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:54:25,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:54:25,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:54:25,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:54:25,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:54:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:54:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:54:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:54:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-17 14:54:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:54:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:54:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:54:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-17 14:54:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:54:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:54:25,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:54:26,166 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:54:26,166 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-17 14:54:26,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:26 BoogieIcfgContainer [2020-07-17 14:54:26,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:54:26,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:54:26,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:54:26,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:54:26,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:54:25" (1/3) ... [2020-07-17 14:54:26,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc776cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:26, skipping insertion in model container [2020-07-17 14:54:26,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:25" (2/3) ... [2020-07-17 14:54:26,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc776cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:26, skipping insertion in model container [2020-07-17 14:54:26,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:26" (3/3) ... [2020-07-17 14:54:26,181 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2020-07-17 14:54:26,194 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:54:26,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:54:26,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:54:26,290 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:54:26,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:54:26,290 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:54:26,291 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:54:26,291 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:54:26,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:54:26,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:54:26,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:54:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-17 14:54:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 14:54:26,338 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:26,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:26,339 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:26,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1063393928, now seen corresponding path program 1 times [2020-07-17 14:54:26,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:26,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028404264] [2020-07-17 14:54:26,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:26,514 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:26,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028404264] [2020-07-17 14:54:26,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:26,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 14:54:26,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650281815] [2020-07-17 14:54:26,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 14:54:26,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:26,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 14:54:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:54:26,546 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-07-17 14:54:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:26,645 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2020-07-17 14:54:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 14:54:26,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-17 14:54:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:26,660 INFO L225 Difference]: With dead ends: 39 [2020-07-17 14:54:26,660 INFO L226 Difference]: Without dead ends: 20 [2020-07-17 14:54:26,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:54:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-17 14:54:26,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-07-17 14:54:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 14:54:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-17 14:54:26,723 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2020-07-17 14:54:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:26,724 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-17 14:54:26,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 14:54:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-17 14:54:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 14:54:26,725 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:26,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:26,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:54:26,727 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1652124924, now seen corresponding path program 1 times [2020-07-17 14:54:26,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:26,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756061305] [2020-07-17 14:54:26,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:26,907 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:26,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756061305] [2020-07-17 14:54:26,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:26,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 14:54:26,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584312798] [2020-07-17 14:54:26,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 14:54:26,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:26,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 14:54:26,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:54:26,916 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2020-07-17 14:54:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:27,056 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-17 14:54:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 14:54:27,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-17 14:54:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:27,058 INFO L225 Difference]: With dead ends: 18 [2020-07-17 14:54:27,058 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 14:54:27,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-17 14:54:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 14:54:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 14:54:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 14:54:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 14:54:27,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-07-17 14:54:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:27,065 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 14:54:27,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 14:54:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 14:54:27,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 14:54:27,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:54:27,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 14:54:27,411 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-17 14:54:27,412 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-17 14:54:27,412 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-17 14:54:27,412 INFO L264 CegarLoopResult]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-17 14:54:27,413 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-17 14:54:27,413 INFO L264 CegarLoopResult]: At program point L14-1(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-17 14:54:27,413 INFO L264 CegarLoopResult]: At program point evalEXIT(lines 12 19) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-17 14:54:27,414 INFO L264 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2020-07-17 14:54:27,415 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (= 0 ~x~0) [2020-07-17 14:54:27,415 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 14:54:27,416 INFO L264 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2020-07-17 14:54:27,417 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-17 14:54:27,418 INFO L264 CegarLoopResult]: At program point L27(lines 22 33) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-17 14:54:27,418 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-17 14:54:27,419 INFO L264 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: (or (not (= 0 |old(~x~0)|)) (= 0 ~x~0)) [2020-07-17 14:54:27,419 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-17 14:54:27,419 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-17 14:54:27,419 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 22 33) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2020-07-17 14:54:27,420 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-17 14:54:27,420 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0)) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:54:27,421 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0))) [2020-07-17 14:54:27,421 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0)) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:54:27,421 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0))) [2020-07-17 14:54:27,422 INFO L264 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 ~x~0)) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:54:27,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:54:27 BoogieIcfgContainer [2020-07-17 14:54:27,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:54:27,460 INFO L168 Benchmark]: Toolchain (without parser) took 1893.56 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 103.3 MB in the beginning and 105.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:27,466 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 14:54:27,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.56 ms. Allocated memory is still 138.9 MB. Free memory was 102.9 MB in the beginning and 93.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:27,470 INFO L168 Benchmark]: Boogie Preprocessor took 128.28 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 93.6 MB in the beginning and 183.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:27,471 INFO L168 Benchmark]: RCFGBuilder took 236.99 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 172.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:27,481 INFO L168 Benchmark]: TraceAbstraction took 1283.95 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 105.4 MB in the end (delta: 66.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:27,488 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 236.56 ms. Allocated memory is still 138.9 MB. Free memory was 102.9 MB in the beginning and 93.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.28 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 93.6 MB in the beginning and 183.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 236.99 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 172.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1283.95 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 105.4 MB in the end (delta: 66.9 MB). Peak memory consumption was 66.9 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 - ProcedureContractResult [Line: 12]: Procedure Contract for eval Derived contract for procedure eval: !(0 == \old(x)) || 0 == x - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: !(0 == \old(x)) - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (0 == \old(cond) || !(0 == x)) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 26 SDslu, 28 SDs, 0 SdLazy, 14 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 40 PreInvPairs, 47 NumberOfFragments, 140 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 79 FormulaSimplificationTreeSizeReductionInter, 0.2s 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...