/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:16:50,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:16:50,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:16:50,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:16:50,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:16:50,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:16:50,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:16:50,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:16:50,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:16:50,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:16:50,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:16:50,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:16:50,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:16:50,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:16:50,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:16:50,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:16:50,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:16:50,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:16:50,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:16:51,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:16:51,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:16:51,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:16:51,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:16:51,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:16:51,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:16:51,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:16:51,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:16:51,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:16:51,034 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 [2020-07-19 23:16:51,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:16:51,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:16:51,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:16:51,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:16:51,083 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:16:51,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:16:51,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:16:51,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:16:51,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:16:51,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:16:51,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:16:51,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:16:51,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:16:51,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:16:51,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:16:51,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:16:51,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:16:51,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:16:51,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:16:51,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:16:51,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:16:51,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:16:51,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:16:51,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:16:51,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:16:51,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:16:51,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:16:51,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:16:51,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:16:51,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:16:51,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:16:51,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:16:51,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:16:51,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:16:51,432 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:16:51,433 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-07-19 23:16:51,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3ba0631/6df76577785646659a616e95dc638f16/FLAG0625ee90b [2020-07-19 23:16:52,016 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:16:52,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-07-19 23:16:52,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3ba0631/6df76577785646659a616e95dc638f16/FLAG0625ee90b [2020-07-19 23:16:52,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3ba0631/6df76577785646659a616e95dc638f16 [2020-07-19 23:16:52,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:16:52,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:16:52,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:16:52,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:16:52,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:16:52,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e02ae07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52, skipping insertion in model container [2020-07-19 23:16:52,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:16:52,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:16:52,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:16:52,636 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:16:52,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:16:52,675 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:16:52,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52 WrapperNode [2020-07-19 23:16:52,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:16:52,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:16:52,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:16:52,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:16:52,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (1/1) ... [2020-07-19 23:16:52,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:16:52,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:16:52,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:16:52,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:16:52,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (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 [2020-07-19 23:16:52,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:16:52,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:16:52,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-07-19 23:16:52,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:16:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:16:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:16:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-07-19 23:16:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:16:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:16:52,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:16:53,043 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:16:53,043 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 23:16:53,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:16:53 BoogieIcfgContainer [2020-07-19 23:16:53,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:16:53,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:16:53,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:16:53,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:16:53,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:16:52" (1/3) ... [2020-07-19 23:16:53,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9ed4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:16:53, skipping insertion in model container [2020-07-19 23:16:53,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:16:52" (2/3) ... [2020-07-19 23:16:53,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9ed4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:16:53, skipping insertion in model container [2020-07-19 23:16:53,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:16:53" (3/3) ... [2020-07-19 23:16:53,057 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-07-19 23:16:53,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:16:53,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:16:53,093 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:16:53,154 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:16:53,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:16:53,155 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:16:53,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:16:53,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:16:53,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:16:53,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:16:53,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:16:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-19 23:16:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 23:16:53,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:53,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:53,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:53,198 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-07-19 23:16:53,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:53,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976641755] [2020-07-19 23:16:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:16:53,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976641755] [2020-07-19 23:16:53,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:16:53,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:16:53,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078139705] [2020-07-19 23:16:53,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:16:53,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:53,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:16:53,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:16:53,448 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-19 23:16:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:53,560 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-19 23:16:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:16:53,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-19 23:16:53,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:53,574 INFO L225 Difference]: With dead ends: 35 [2020-07-19 23:16:53,574 INFO L226 Difference]: Without dead ends: 21 [2020-07-19 23:16:53,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:16:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-19 23:16:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-19 23:16:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-19 23:16:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-19 23:16:53,632 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-07-19 23:16:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:53,632 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-19 23:16:53,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:16:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-19 23:16:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-19 23:16:53,635 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:53,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:53,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:16:53,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-07-19 23:16:53,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:53,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965979034] [2020-07-19 23:16:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:16:53,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965979034] [2020-07-19 23:16:53,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:16:53,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:16:53,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660529513] [2020-07-19 23:16:53,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:16:53,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:53,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:16:53,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:16:53,759 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-07-19 23:16:53,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:53,847 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-07-19 23:16:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:16:53,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-19 23:16:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:53,850 INFO L225 Difference]: With dead ends: 27 [2020-07-19 23:16:53,851 INFO L226 Difference]: Without dead ends: 23 [2020-07-19 23:16:53,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:16:53,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-19 23:16:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-19 23:16:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-19 23:16:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-19 23:16:53,870 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-07-19 23:16:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:53,871 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-19 23:16:53,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:16:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-19 23:16:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 23:16:53,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:53,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:53,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:16:53,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:53,878 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-07-19 23:16:53,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:53,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877901591] [2020-07-19 23:16:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 23:16:54,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877901591] [2020-07-19 23:16:54,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293144439] [2020-07-19 23:16:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@70560e26 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:54,086 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@70560e26 issued 3 check-sat command(s) [2020-07-19 23:16:54,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:16:54,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 23:16:54,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:16:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-19 23:16:54,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:16:54,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-07-19 23:16:54,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102152693] [2020-07-19 23:16:54,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 23:16:54,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:54,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 23:16:54,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:16:54,214 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 9 states. [2020-07-19 23:16:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:54,396 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-07-19 23:16:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-19 23:16:54,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-19 23:16:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:54,401 INFO L225 Difference]: With dead ends: 38 [2020-07-19 23:16:54,401 INFO L226 Difference]: Without dead ends: 23 [2020-07-19 23:16:54,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:16:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-19 23:16:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-19 23:16:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-19 23:16:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-19 23:16:54,415 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-07-19 23:16:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:54,416 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-19 23:16:54,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 23:16:54,417 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-19 23:16:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 23:16:54,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:54,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:54,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 23:16:54,638 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:54,639 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-07-19 23:16:54,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:54,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288402390] [2020-07-19 23:16:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-19 23:16:54,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288402390] [2020-07-19 23:16:54,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735130897] [2020-07-19 23:16:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@734be7ac No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:54,812 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@734be7ac issued 3 check-sat command(s) [2020-07-19 23:16:54,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:16:54,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-19 23:16:54,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:16:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-19 23:16:54,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:16:54,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-07-19 23:16:54,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452216434] [2020-07-19 23:16:54,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 23:16:54,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:54,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 23:16:54,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-19 23:16:54,841 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-07-19 23:16:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:54,939 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-07-19 23:16:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-19 23:16:54,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-07-19 23:16:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:54,942 INFO L225 Difference]: With dead ends: 41 [2020-07-19 23:16:54,943 INFO L226 Difference]: Without dead ends: 37 [2020-07-19 23:16:54,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:16:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-19 23:16:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-19 23:16:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-19 23:16:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-07-19 23:16:54,955 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-07-19 23:16:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:54,955 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-07-19 23:16:54,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 23:16:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-07-19 23:16:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-19 23:16:54,958 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:54,958 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:55,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:55,162 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:55,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:55,163 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-07-19 23:16:55,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:55,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341856534] [2020-07-19 23:16:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:55,364 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-19 23:16:55,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341856534] [2020-07-19 23:16:55,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530450853] [2020-07-19 23:16:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4dc1a4f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:55,403 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4dc1a4f issued 3 check-sat command(s) [2020-07-19 23:16:55,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:16:55,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-19 23:16:55,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:16:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-19 23:16:55,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:16:55,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-19 23:16:55,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030217671] [2020-07-19 23:16:55,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-19 23:16:55,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:55,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-19 23:16:55,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-07-19 23:16:55,481 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 12 states. [2020-07-19 23:16:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:55,717 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2020-07-19 23:16:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 23:16:55,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-07-19 23:16:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:55,720 INFO L225 Difference]: With dead ends: 72 [2020-07-19 23:16:55,720 INFO L226 Difference]: Without dead ends: 41 [2020-07-19 23:16:55,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-07-19 23:16:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-19 23:16:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-19 23:16:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-19 23:16:55,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-19 23:16:55,731 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2020-07-19 23:16:55,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:55,731 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-19 23:16:55,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-19 23:16:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-19 23:16:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-19 23:16:55,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:55,734 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:55,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:55,950 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:55,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2001184551, now seen corresponding path program 3 times [2020-07-19 23:16:55,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:55,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266104780] [2020-07-19 23:16:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-19 23:16:56,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266104780] [2020-07-19 23:16:56,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926896139] [2020-07-19 23:16:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@e5862e9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:56,228 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@e5862e9 issued 3 check-sat command(s) [2020-07-19 23:16:56,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:16:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-19 23:16:56,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:16:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-19 23:16:56,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:16:56,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-07-19 23:16:56,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203895652] [2020-07-19 23:16:56,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 23:16:56,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:56,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 23:16:56,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-19 23:16:56,270 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 9 states. [2020-07-19 23:16:56,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:56,415 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-07-19 23:16:56,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:16:56,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-07-19 23:16:56,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:56,420 INFO L225 Difference]: With dead ends: 83 [2020-07-19 23:16:56,420 INFO L226 Difference]: Without dead ends: 79 [2020-07-19 23:16:56,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-19 23:16:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-19 23:16:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-07-19 23:16:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-19 23:16:56,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2020-07-19 23:16:56,447 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 68 [2020-07-19 23:16:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:56,449 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2020-07-19 23:16:56,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 23:16:56,449 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2020-07-19 23:16:56,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-19 23:16:56,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:56,460 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:56,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:56,675 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:56,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2068257585, now seen corresponding path program 4 times [2020-07-19 23:16:56,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:56,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699108443] [2020-07-19 23:16:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 249 proven. 381 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-07-19 23:16:57,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699108443] [2020-07-19 23:16:57,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574097784] [2020-07-19 23:16:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d304666 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:57,441 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d304666 issued 4 check-sat command(s) [2020-07-19 23:16:57,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:16:57,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-19 23:16:57,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:16:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 327 proven. 131 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-07-19 23:16:57,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:16:57,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 15 [2020-07-19 23:16:57,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968080830] [2020-07-19 23:16:57,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-19 23:16:57,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:57,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-19 23:16:57,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-19 23:16:57,522 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand 15 states. [2020-07-19 23:16:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:58,102 INFO L93 Difference]: Finished difference Result 146 states and 255 transitions. [2020-07-19 23:16:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-19 23:16:58,103 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-07-19 23:16:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:58,105 INFO L225 Difference]: With dead ends: 146 [2020-07-19 23:16:58,105 INFO L226 Difference]: Without dead ends: 69 [2020-07-19 23:16:58,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2020-07-19 23:16:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-19 23:16:58,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-07-19 23:16:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-19 23:16:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2020-07-19 23:16:58,120 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 150 [2020-07-19 23:16:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:58,121 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2020-07-19 23:16:58,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-19 23:16:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2020-07-19 23:16:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-19 23:16:58,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:58,123 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:58,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-19 23:16:58,336 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:58,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1200034344, now seen corresponding path program 5 times [2020-07-19 23:16:58,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:58,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414035968] [2020-07-19 23:16:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-07-19 23:16:58,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414035968] [2020-07-19 23:16:58,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407507892] [2020-07-19 23:16:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@791a86a5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:58,922 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@791a86a5 issued 4 check-sat command(s) [2020-07-19 23:16:58,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:16:58,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 63 conjunts are in the unsatisfiable core [2020-07-19 23:16:58,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:16:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-07-19 23:16:59,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:16:59,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 20 [2020-07-19 23:16:59,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403873677] [2020-07-19 23:16:59,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-19 23:16:59,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:16:59,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-19 23:16:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-07-19 23:16:59,309 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 20 states. [2020-07-19 23:16:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:16:59,533 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2020-07-19 23:16:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 23:16:59,534 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 109 [2020-07-19 23:16:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:16:59,536 INFO L225 Difference]: With dead ends: 72 [2020-07-19 23:16:59,536 INFO L226 Difference]: Without dead ends: 68 [2020-07-19 23:16:59,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 146 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-07-19 23:16:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-19 23:16:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-19 23:16:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-19 23:16:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2020-07-19 23:16:59,549 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 109 [2020-07-19 23:16:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:16:59,550 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2020-07-19 23:16:59,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-19 23:16:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2020-07-19 23:16:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-19 23:16:59,552 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:16:59,552 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:16:59,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:16:59,768 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:16:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:16:59,769 INFO L82 PathProgramCache]: Analyzing trace with hash -344605238, now seen corresponding path program 6 times [2020-07-19 23:16:59,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:16:59,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957226861] [2020-07-19 23:16:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc33041 [2020-07-19 23:16:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:16:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:17:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 204 proven. 219 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2020-07-19 23:17:00,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957226861] [2020-07-19 23:17:00,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749402352] [2020-07-19 23:17:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3981a49 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:17:00,169 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3981a49 issued 3 check-sat command(s) [2020-07-19 23:17:00,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:17:00,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-19 23:17:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:17:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 131 proven. 297 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2020-07-19 23:17:00,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:17:00,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-07-19 23:17:00,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123932392] [2020-07-19 23:17:00,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-19 23:17:00,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:17:00,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-19 23:17:00,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-07-19 23:17:00,276 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand 15 states. [2020-07-19 23:17:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:17:00,589 INFO L93 Difference]: Finished difference Result 127 states and 169 transitions. [2020-07-19 23:17:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-19 23:17:00,590 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-07-19 23:17:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:17:00,591 INFO L225 Difference]: With dead ends: 127 [2020-07-19 23:17:00,591 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 23:17:00,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-07-19 23:17:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 23:17:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 23:17:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 23:17:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 23:17:00,598 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2020-07-19 23:17:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:17:00,599 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 23:17:00,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-19 23:17:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 23:17:00,599 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 23:17:00,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:17:00,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 23:17:01,138 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 30 [2020-07-19 23:17:01,222 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 23:17:01,223 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:17:01,223 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 23:17:01,223 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 23:17:01,223 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 23:17:01,223 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 23:17:01,224 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-07-19 23:17:01,224 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2020-07-19 23:17:01,224 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-07-19 23:17:01,224 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-07-19 23:17:01,224 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0)) [2020-07-19 23:17:01,224 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2020-07-19 23:17:01,225 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-19 23:17:01,225 INFO L268 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-07-19 23:17:01,225 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2020-07-19 23:17:01,225 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-07-19 23:17:01,225 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-07-19 23:17:01,225 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (= fibo_~n |fibo_#in~n|) (<= 2 |fibo_#in~n|)) [2020-07-19 23:17:01,226 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-19 23:17:01,226 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse0 (<= 1 |fibo_#t~ret0|)) (.cse1 (<= |fibo_#t~ret0| 1)) (.cse2 (= fibo_~n |fibo_#in~n|))) (or (and .cse0 .cse1 .cse2 (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3)) (and (<= 3 |fibo_#t~ret0|) .cse2 (<= 5 fibo_~n) (<= |fibo_#t~ret0| 3)) (and .cse2 (<= 6 |fibo_#in~n|)) (and .cse0 .cse1 (<= |fibo_#in~n| 2) .cse2 (<= 2 |fibo_#in~n|)) (and (<= 4 |fibo_#in~n|) .cse2 (<= |fibo_#t~ret0| 2) (<= |fibo_#in~n| 4) (<= 2 |fibo_#t~ret0|)))) [2020-07-19 23:17:01,227 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-07-19 23:17:01,227 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-07-19 23:17:01,227 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-07-19 23:17:01,227 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-07-19 23:17:01,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:17:01 BoogieIcfgContainer [2020-07-19 23:17:01,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:17:01,238 INFO L168 Benchmark]: Toolchain (without parser) took 8834.20 ms. Allocated memory was 137.9 MB in the beginning and 315.1 MB in the end (delta: 177.2 MB). Free memory was 102.4 MB in the beginning and 270.7 MB in the end (delta: -168.3 MB). Peak memory consumption was 187.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:17:01,239 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 23:17:01,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.35 ms. Allocated memory is still 137.9 MB. Free memory was 102.0 MB in the beginning and 92.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:17:01,241 INFO L168 Benchmark]: Boogie Preprocessor took 26.95 ms. Allocated memory is still 137.9 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:17:01,242 INFO L168 Benchmark]: RCFGBuilder took 344.66 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 170.2 MB in the end (delta: -78.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:17:01,243 INFO L168 Benchmark]: TraceAbstraction took 8186.22 ms. Allocated memory was 202.4 MB in the beginning and 315.1 MB in the end (delta: 112.7 MB). Free memory was 170.2 MB in the beginning and 270.7 MB in the end (delta: -100.5 MB). Peak memory consumption was 190.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:17:01,247 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.35 ms. Allocated memory is still 137.9 MB. Free memory was 102.0 MB in the beginning and 92.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.95 ms. Allocated memory is still 137.9 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.66 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.4 MB in the beginning and 170.2 MB in the end (delta: -78.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8186.22 ms. Allocated memory was 202.4 MB in the beginning and 315.1 MB in the end (delta: 112.7 MB). Free memory was 170.2 MB in the beginning and 270.7 MB in the end (delta: -100.5 MB). Peak memory consumption was 190.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 9, TraceHistogramMax: 21, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 267 SDslu, 921 SDs, 0 SdLazy, 1092 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 864 GetRequests, 732 SyntacticMatches, 9 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 131 PreInvPairs, 194 NumberOfFragments, 88 HoareAnnotationTreeSize, 131 FomulaSimplifications, 486 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 819 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1123 ConstructedInterpolants, 0 QuantifiedInterpolants, 262711 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1129 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 4217/5840 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...