/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:02:46,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:02:46,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:02:46,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 22:02:46,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:02:46,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:02:46,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:02:46,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:02:46,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:02:46,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:02:46,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:02:46,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:02:46,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:02:46,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:02:46,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:02:46,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:02:46,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:02:46,950 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 [2020-07-21 22:02:46,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:02:46,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:02:46,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:02:46,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:02:46,966 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:02:46,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:02:46,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:02:46,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:02:46,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:02:46,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:02:46,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:02:46,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:02:46,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:02:46,967 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:02:46,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:02:46,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:02:46,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:02:46,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:02:46,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:02:46,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:02:46,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:02:46,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:46,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:02:46,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:02:46,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:02:46,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:02:46,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:46,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:02:46,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:02:46,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:02:47,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:02:47,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:02:47,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:02:47,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:02:47,270 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:02:47,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-21 22:02:47,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812468805/61afdb8bca3f43d59b64d8deeb8b5c35/FLAG1786f841d [2020-07-21 22:02:47,777 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:02:47,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-21 22:02:47,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812468805/61afdb8bca3f43d59b64d8deeb8b5c35/FLAG1786f841d [2020-07-21 22:02:48,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812468805/61afdb8bca3f43d59b64d8deeb8b5c35 [2020-07-21 22:02:48,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:48,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:48,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:48,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:48,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:48,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d0d0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48, skipping insertion in model container [2020-07-21 22:02:48,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:48,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:48,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:48,404 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:48,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:48,435 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:48,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48 WrapperNode [2020-07-21 22:02:48,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:48,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:48,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:48,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:48,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (1/1) ... [2020-07-21 22:02:48,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:48,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:48,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:48,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:48,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (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 [2020-07-21 22:02:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-07-21 22:02:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-07-21 22:02:48,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:02:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-07-21 22:02:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-07-21 22:02:48,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:48,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:48,822 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:48,822 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 22:02:48,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:48 BoogieIcfgContainer [2020-07-21 22:02:48,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:48,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:48,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:48,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:48,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:48" (1/3) ... [2020-07-21 22:02:48,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431e2970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:48, skipping insertion in model container [2020-07-21 22:02:48,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:48" (2/3) ... [2020-07-21 22:02:48,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431e2970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:48, skipping insertion in model container [2020-07-21 22:02:48,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:48" (3/3) ... [2020-07-21 22:02:48,837 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-07-21 22:02:48,849 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:48,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:48,874 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:48,901 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:48,902 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:48,902 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:48,902 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:48,902 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:48,903 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:48,903 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:48,903 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-21 22:02:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 22:02:48,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:48,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:48,934 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2122072279, now seen corresponding path program 1 times [2020-07-21 22:02:48,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:48,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044196767] [2020-07-21 22:02:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:49,019 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:49,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:49,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 22:02:49,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:49,131 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:02:49,134 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:02:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:49,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:49,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044196767] [2020-07-21 22:02:49,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:49,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 22:02:49,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592766388] [2020-07-21 22:02:49,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:02:49,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:49,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:02:49,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:02:49,267 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2020-07-21 22:02:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:49,426 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-07-21 22:02:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:02:49,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-21 22:02:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:49,438 INFO L225 Difference]: With dead ends: 43 [2020-07-21 22:02:49,439 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 22:02:49,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:02:49,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 22:02:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 22:02:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 22:02:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-07-21 22:02:49,489 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2020-07-21 22:02:49,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:49,489 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-07-21 22:02:49,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:02:49,490 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-07-21 22:02:49,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 22:02:49,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:49,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:49,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:49,709 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash -612070348, now seen corresponding path program 1 times [2020-07-21 22:02:49,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:49,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765186190] [2020-07-21 22:02:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:49,741 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:49,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:49,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:02:49,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:49,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:49,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765186190] [2020-07-21 22:02:49,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:49,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 22:02:49,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253143317] [2020-07-21 22:02:49,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:02:49,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:02:49,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:02:49,823 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2020-07-21 22:02:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:49,944 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-07-21 22:02:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:02:49,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-07-21 22:02:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:49,946 INFO L225 Difference]: With dead ends: 33 [2020-07-21 22:02:49,946 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 22:02:49,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:02:49,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 22:02:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-21 22:02:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 22:02:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-07-21 22:02:49,964 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2020-07-21 22:02:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:49,966 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-07-21 22:02:49,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:02:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-07-21 22:02:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 22:02:49,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:49,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:50,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:50,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:50,184 INFO L82 PathProgramCache]: Analyzing trace with hash -592576498, now seen corresponding path program 1 times [2020-07-21 22:02:50,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:50,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351249065] [2020-07-21 22:02:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:50,218 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:02:50,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:50,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:02:50,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:50,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:50,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351249065] [2020-07-21 22:02:50,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:50,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:02:50,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541383942] [2020-07-21 22:02:50,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:02:50,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:50,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:02:50,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:02:50,259 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-07-21 22:02:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:50,310 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-07-21 22:02:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 22:02:50,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-21 22:02:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:50,312 INFO L225 Difference]: With dead ends: 41 [2020-07-21 22:02:50,312 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 22:02:50,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:02:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 22:02:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-21 22:02:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 22:02:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-21 22:02:50,319 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-07-21 22:02:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:50,319 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-21 22:02:50,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:02:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-21 22:02:50,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 22:02:50,321 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:50,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:50,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:50,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:50,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1306118367, now seen corresponding path program 1 times [2020-07-21 22:02:50,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:50,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171569781] [2020-07-21 22:02:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:50,552 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:50,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:50,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 22:02:50,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:50,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:50,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171569781] [2020-07-21 22:02:50,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:50,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 22:02:50,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63369798] [2020-07-21 22:02:50,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 22:02:50,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:50,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 22:02:50,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:02:50,654 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 10 states. [2020-07-21 22:02:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:50,808 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-07-21 22:02:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:02:50,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-21 22:02:50,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:50,810 INFO L225 Difference]: With dead ends: 36 [2020-07-21 22:02:50,810 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 22:02:50,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-07-21 22:02:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 22:02:50,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-21 22:02:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 22:02:50,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-21 22:02:50,817 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-07-21 22:02:50,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:50,818 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-21 22:02:50,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 22:02:50,818 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-21 22:02:50,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 22:02:50,819 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:50,819 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:51,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:51,034 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:51,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1571291849, now seen corresponding path program 1 times [2020-07-21 22:02:51,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:51,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930435350] [2020-07-21 22:02:51,037 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:51,060 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:02:51,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:51,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:02:51,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 22:02:51,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:51,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930435350] [2020-07-21 22:02:51,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:51,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:02:51,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073975762] [2020-07-21 22:02:51,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:02:51,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:51,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:02:51,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:02:51,088 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-07-21 22:02:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:51,141 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-07-21 22:02:51,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 22:02:51,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-07-21 22:02:51,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:51,143 INFO L225 Difference]: With dead ends: 42 [2020-07-21 22:02:51,143 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 22:02:51,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:02:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 22:02:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-21 22:02:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 22:02:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-07-21 22:02:51,150 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2020-07-21 22:02:51,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:51,151 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-07-21 22:02:51,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:02:51,151 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-07-21 22:02:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 22:02:51,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:51,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:51,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:51,367 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1610221656, now seen corresponding path program 1 times [2020-07-21 22:02:51,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:51,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635166699] [2020-07-21 22:02:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:51,396 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:51,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:51,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-21 22:02:51,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 22:02:51,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:02:51,527 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-07-21 22:02:51,527 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:51,924 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:51,925 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:02:51,927 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:02:51,929 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:52,014 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:52,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 22:02:52,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635166699] [2020-07-21 22:02:52,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:02:52,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-07-21 22:02:52,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204686102] [2020-07-21 22:02:52,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-21 22:02:52,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:52,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-21 22:02:52,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-07-21 22:02:52,059 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 19 states. [2020-07-21 22:02:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:52,328 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-07-21 22:02:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 22:02:52,328 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 29 [2020-07-21 22:02:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:52,330 INFO L225 Difference]: With dead ends: 42 [2020-07-21 22:02:52,330 INFO L226 Difference]: Without dead ends: 38 [2020-07-21 22:02:52,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:02:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-21 22:02:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-07-21 22:02:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 22:02:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-07-21 22:02:52,338 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2020-07-21 22:02:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:52,338 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-07-21 22:02:52,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-21 22:02:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-07-21 22:02:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 22:02:52,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:52,340 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:52,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:52,548 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:52,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1417612799, now seen corresponding path program 1 times [2020-07-21 22:02:52,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:52,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325792453] [2020-07-21 22:02:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:52,580 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:52,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:52,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-21 22:02:52,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 22:02:52,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:02:53,261 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:53,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:53,545 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:02:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 22:02:53,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325792453] [2020-07-21 22:02:53,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:02:53,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2020-07-21 22:02:53,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460406872] [2020-07-21 22:02:53,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 22:02:53,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:53,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 22:02:53,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-07-21 22:02:53,627 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 28 states. [2020-07-21 22:02:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:53,629 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-21 22:02:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:53,630 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 36 [2020-07-21 22:02:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:53,630 INFO L225 Difference]: With dead ends: 33 [2020-07-21 22:02:53,630 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:02:53,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-07-21 22:02:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:02:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:02:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:02:53,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:02:53,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-07-21 22:02:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:53,632 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:02:53,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 22:02:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:02:53,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:02:53,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:53,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:02:53,889 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 22:02:53,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:02:53,889 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-07-21 22:02:53,890 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-07-21 22:02:53,890 INFO L268 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-07-21 22:02:53,890 INFO L268 CegarLoopResult]: For program point isEvenEXIT(lines 26 34) no Hoare annotation was computed. [2020-07-21 22:02:53,890 INFO L268 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-07-21 22:02:53,890 INFO L268 CegarLoopResult]: For program point isEvenFINAL(lines 26 34) no Hoare annotation was computed. [2020-07-21 22:02:53,890 INFO L271 CegarLoopResult]: At program point isEvenENTRY(lines 26 34) the Hoare annotation is: true [2020-07-21 22:02:53,890 INFO L268 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2020-07-21 22:02:53,891 INFO L268 CegarLoopResult]: For program point isOddFINAL(lines 16 24) no Hoare annotation was computed. [2020-07-21 22:02:53,891 INFO L271 CegarLoopResult]: At program point isOddENTRY(lines 16 24) the Hoare annotation is: true [2020-07-21 22:02:53,891 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-21 22:02:53,891 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-07-21 22:02:53,891 INFO L268 CegarLoopResult]: For program point isOddEXIT(lines 16 24) no Hoare annotation was computed. [2020-07-21 22:02:53,891 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-07-21 22:02:53,891 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:02:53,891 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: false [2020-07-21 22:02:53,892 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:02:53,892 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:02:53,893 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2020-07-21 22:02:53,893 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 37 49) the Hoare annotation is: true [2020-07-21 22:02:53,893 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 37 49) no Hoare annotation was computed. [2020-07-21 22:02:53,893 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-07-21 22:02:53,893 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 37 49) no Hoare annotation was computed. [2020-07-21 22:02:53,894 INFO L268 CegarLoopResult]: For program point L44(lines 44 48) no Hoare annotation was computed. [2020-07-21 22:02:53,894 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-21 22:02:53,894 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-07-21 22:02:53,894 INFO L268 CegarLoopResult]: For program point L39(lines 39 41) no Hoare annotation was computed. [2020-07-21 22:02:53,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:53 BoogieIcfgContainer [2020-07-21 22:02:53,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:53,906 INFO L168 Benchmark]: Toolchain (without parser) took 5699.43 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 100.9 MB in the beginning and 100.5 MB in the end (delta: 378.4 kB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:53,907 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:53,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.65 ms. Allocated memory is still 144.2 MB. Free memory was 100.4 MB in the beginning and 90.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:53,914 INFO L168 Benchmark]: Boogie Preprocessor took 120.38 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.8 MB in the beginning and 180.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:53,915 INFO L168 Benchmark]: RCFGBuilder took 271.31 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 166.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:53,916 INFO L168 Benchmark]: TraceAbstraction took 5072.70 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 165.8 MB in the beginning and 100.5 MB in the end (delta: 65.3 MB). Peak memory consumption was 113.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:53,931 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 228.65 ms. Allocated memory is still 144.2 MB. Free memory was 100.4 MB in the beginning and 90.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.38 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.8 MB in the beginning and 180.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 271.31 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 166.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5072.70 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 165.8 MB in the beginning and 100.5 MB in the end (delta: 65.3 MB). Peak memory consumption was 113.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 69 SDslu, 619 SDs, 0 SdLazy, 452 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 151 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 165 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 221 ConstructedInterpolants, 1 QuantifiedInterpolants, 26159 SizeOfPredicates, 30 NumberOfNonLiveVariables, 371 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 17/38 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...