/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:11:26,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:11:26,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:11:26,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:11:26,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:11:26,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:11:26,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:11:26,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:11:26,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:11:26,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:11:26,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:11:26,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:11:26,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:11:26,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:11:26,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:11:26,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:11:26,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:11:26,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:11:26,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:11:26,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:11:26,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:11:26,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:11:26,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:11:26,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:11:27,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:11:27,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:11:27,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:11:27,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:11:27,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:11:27,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:11:27,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:11:27,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:11:27,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:11:27,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:11:27,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:11:27,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:11:27,015 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 [2020-07-17 12:11:27,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:11:27,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:11:27,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:11:27,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:11:27,032 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:11:27,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:11:27,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:11:27,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:11:27,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:11:27,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:11:27,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:11:27,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:11:27,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:11:27,034 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:11:27,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:11:27,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:11:27,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:11:27,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:11:27,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:11:27,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:11:27,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:11:27,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:11:27,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:11:27,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:11:27,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:11:27,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:11:27,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:11:27,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:11:27,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:11:27,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:11:27,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:11:27,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:11:27,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:11:27,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:11:27,342 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:11:27,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-07-17 12:11:27,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e759161c/b720c919b99b4eeaa4454d85d47fec6b/FLAGfe8247007 [2020-07-17 12:11:27,894 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:11:27,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2020-07-17 12:11:27,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e759161c/b720c919b99b4eeaa4454d85d47fec6b/FLAGfe8247007 [2020-07-17 12:11:28,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e759161c/b720c919b99b4eeaa4454d85d47fec6b [2020-07-17 12:11:28,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:11:28,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:11:28,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:11:28,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:11:28,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:11:28,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306a7df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28, skipping insertion in model container [2020-07-17 12:11:28,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:11:28,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:11:28,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:11:28,506 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:11:28,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:11:28,642 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:11:28,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28 WrapperNode [2020-07-17 12:11:28,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:11:28,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:11:28,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:11:28,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:11:28,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... [2020-07-17 12:11:28,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:11:28,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:11:28,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:11:28,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:11:28,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:11:28,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:11:28,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:11:28,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:11:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:11:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:11:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:11:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:11:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:11:29,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:11:29,241 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-17 12:11:29,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:11:29 BoogieIcfgContainer [2020-07-17 12:11:29,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:11:29,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:11:29,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:11:29,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:11:29,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:11:28" (1/3) ... [2020-07-17 12:11:29,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3988534d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:11:29, skipping insertion in model container [2020-07-17 12:11:29,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:11:28" (2/3) ... [2020-07-17 12:11:29,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3988534d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:11:29, skipping insertion in model container [2020-07-17 12:11:29,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:11:29" (3/3) ... [2020-07-17 12:11:29,254 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-07-17 12:11:29,263 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:11:29,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:11:29,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:11:29,308 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:11:29,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:11:29,308 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:11:29,309 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:11:29,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:11:29,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:11:29,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:11:29,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:11:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-07-17 12:11:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 12:11:29,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:29,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:11:29,336 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:29,342 INFO L82 PathProgramCache]: Analyzing trace with hash -105811556, now seen corresponding path program 1 times [2020-07-17 12:11:29,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:29,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071829272] [2020-07-17 12:11:29,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:11:29,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071829272] [2020-07-17 12:11:29,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:29,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:11:29,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830540636] [2020-07-17 12:11:29,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:11:29,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:29,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:11:29,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:11:29,553 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-07-17 12:11:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:29,617 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2020-07-17 12:11:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:11:29,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-17 12:11:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:29,644 INFO L225 Difference]: With dead ends: 160 [2020-07-17 12:11:29,644 INFO L226 Difference]: Without dead ends: 78 [2020-07-17 12:11:29,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:11:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-17 12:11:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-17 12:11:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-17 12:11:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2020-07-17 12:11:29,727 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2020-07-17 12:11:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:29,727 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2020-07-17 12:11:29,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:11:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2020-07-17 12:11:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 12:11:29,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:29,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:11:29,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:11:29,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:29,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1547300989, now seen corresponding path program 1 times [2020-07-17 12:11:29,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:29,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264063036] [2020-07-17 12:11:29,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:11:29,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264063036] [2020-07-17 12:11:29,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:29,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:29,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602156953] [2020-07-17 12:11:29,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:29,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:29,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:29,818 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 4 states. [2020-07-17 12:11:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:30,147 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2020-07-17 12:11:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:30,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-17 12:11:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:30,149 INFO L225 Difference]: With dead ends: 153 [2020-07-17 12:11:30,149 INFO L226 Difference]: Without dead ends: 81 [2020-07-17 12:11:30,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:30,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-17 12:11:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-17 12:11:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 12:11:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2020-07-17 12:11:30,163 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2020-07-17 12:11:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:30,163 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2020-07-17 12:11:30,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:30,163 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2020-07-17 12:11:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:11:30,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:30,165 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:11:30,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:11:30,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash 555004895, now seen corresponding path program 1 times [2020-07-17 12:11:30,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:30,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127308786] [2020-07-17 12:11:30,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:11:30,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127308786] [2020-07-17 12:11:30,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:30,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:30,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865789645] [2020-07-17 12:11:30,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:30,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:30,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:30,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:30,227 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 4 states. [2020-07-17 12:11:30,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:30,317 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2020-07-17 12:11:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:30,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-17 12:11:30,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:30,319 INFO L225 Difference]: With dead ends: 146 [2020-07-17 12:11:30,319 INFO L226 Difference]: Without dead ends: 72 [2020-07-17 12:11:30,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-17 12:11:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-17 12:11:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-17 12:11:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2020-07-17 12:11:30,330 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2020-07-17 12:11:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:30,330 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2020-07-17 12:11:30,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2020-07-17 12:11:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 12:11:30,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:30,332 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:11:30,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:11:30,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:30,333 INFO L82 PathProgramCache]: Analyzing trace with hash -624681896, now seen corresponding path program 1 times [2020-07-17 12:11:30,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:30,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263013648] [2020-07-17 12:11:30,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:11:30,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263013648] [2020-07-17 12:11:30,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:30,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:30,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546491443] [2020-07-17 12:11:30,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:30,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:30,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:30,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:30,429 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 4 states. [2020-07-17 12:11:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:30,675 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2020-07-17 12:11:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:30,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-17 12:11:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:30,678 INFO L225 Difference]: With dead ends: 192 [2020-07-17 12:11:30,678 INFO L226 Difference]: Without dead ends: 122 [2020-07-17 12:11:30,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-17 12:11:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-07-17 12:11:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-17 12:11:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2020-07-17 12:11:30,691 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2020-07-17 12:11:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:30,691 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2020-07-17 12:11:30,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2020-07-17 12:11:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 12:11:30,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:30,693 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:11:30,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 12:11:30,693 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:30,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598883, now seen corresponding path program 1 times [2020-07-17 12:11:30,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:30,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397605375] [2020-07-17 12:11:30,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:11:30,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397605375] [2020-07-17 12:11:30,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:30,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:30,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895591405] [2020-07-17 12:11:30,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:30,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:30,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:30,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:30,753 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 4 states. [2020-07-17 12:11:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:30,905 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-07-17 12:11:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:30,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-17 12:11:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:30,908 INFO L225 Difference]: With dead ends: 183 [2020-07-17 12:11:30,908 INFO L226 Difference]: Without dead ends: 87 [2020-07-17 12:11:30,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-17 12:11:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-07-17 12:11:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 12:11:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2020-07-17 12:11:30,918 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2020-07-17 12:11:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:30,919 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2020-07-17 12:11:30,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2020-07-17 12:11:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 12:11:30,921 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:30,921 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:11:30,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 12:11:30,921 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:30,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:30,922 INFO L82 PathProgramCache]: Analyzing trace with hash -576284788, now seen corresponding path program 1 times [2020-07-17 12:11:30,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:30,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105826965] [2020-07-17 12:11:30,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:11:30,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105826965] [2020-07-17 12:11:30,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:30,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:30,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789734295] [2020-07-17 12:11:30,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:30,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:30,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:30,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:30,975 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 4 states. [2020-07-17 12:11:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:31,065 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2020-07-17 12:11:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:31,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-07-17 12:11:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:31,067 INFO L225 Difference]: With dead ends: 134 [2020-07-17 12:11:31,067 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 12:11:31,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 12:11:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-17 12:11:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-17 12:11:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-07-17 12:11:31,075 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2020-07-17 12:11:31,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:31,076 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-07-17 12:11:31,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-07-17 12:11:31,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 12:11:31,078 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:31,078 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-17 12:11:31,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 12:11:31,078 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:31,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:31,079 INFO L82 PathProgramCache]: Analyzing trace with hash -31288535, now seen corresponding path program 1 times [2020-07-17 12:11:31,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:31,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028163136] [2020-07-17 12:11:31,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:11:31,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028163136] [2020-07-17 12:11:31,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:31,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:31,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241978321] [2020-07-17 12:11:31,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:31,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:31,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:31,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:31,145 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 4 states. [2020-07-17 12:11:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:31,331 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2020-07-17 12:11:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:31,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-17 12:11:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:31,333 INFO L225 Difference]: With dead ends: 158 [2020-07-17 12:11:31,333 INFO L226 Difference]: Without dead ends: 111 [2020-07-17 12:11:31,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-17 12:11:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-07-17 12:11:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-17 12:11:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-07-17 12:11:31,343 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2020-07-17 12:11:31,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:31,343 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-07-17 12:11:31,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-07-17 12:11:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 12:11:31,345 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:31,345 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-17 12:11:31,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 12:11:31,346 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash 180888733, now seen corresponding path program 1 times [2020-07-17 12:11:31,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:31,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525739179] [2020-07-17 12:11:31,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:11:31,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525739179] [2020-07-17 12:11:31,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:31,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:31,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876164417] [2020-07-17 12:11:31,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:31,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:31,391 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 4 states. [2020-07-17 12:11:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:31,502 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2020-07-17 12:11:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:31,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-17 12:11:31,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:31,504 INFO L225 Difference]: With dead ends: 166 [2020-07-17 12:11:31,504 INFO L226 Difference]: Without dead ends: 92 [2020-07-17 12:11:31,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-17 12:11:31,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-07-17 12:11:31,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-17 12:11:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2020-07-17 12:11:31,513 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2020-07-17 12:11:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:31,513 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2020-07-17 12:11:31,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2020-07-17 12:11:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 12:11:31,515 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:31,515 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-17 12:11:31,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 12:11:31,516 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:31,516 INFO L82 PathProgramCache]: Analyzing trace with hash 317242888, now seen corresponding path program 1 times [2020-07-17 12:11:31,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:31,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935960630] [2020-07-17 12:11:31,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:11:31,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935960630] [2020-07-17 12:11:31,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:31,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:31,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706342081] [2020-07-17 12:11:31,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:31,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:31,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:31,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:31,568 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 4 states. [2020-07-17 12:11:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:31,680 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2020-07-17 12:11:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:31,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-17 12:11:31,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:31,682 INFO L225 Difference]: With dead ends: 139 [2020-07-17 12:11:31,682 INFO L226 Difference]: Without dead ends: 72 [2020-07-17 12:11:31,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-17 12:11:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-17 12:11:31,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-17 12:11:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-07-17 12:11:31,688 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2020-07-17 12:11:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:31,689 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-07-17 12:11:31,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-07-17 12:11:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 12:11:31,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:31,690 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1] [2020-07-17 12:11:31,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 12:11:31,691 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:31,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1695196396, now seen corresponding path program 1 times [2020-07-17 12:11:31,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:31,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704214386] [2020-07-17 12:11:31,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:11:31,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704214386] [2020-07-17 12:11:31,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:31,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:31,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047527233] [2020-07-17 12:11:31,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:31,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:31,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:31,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:31,735 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 4 states. [2020-07-17 12:11:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:31,853 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-07-17 12:11:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:31,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-07-17 12:11:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:31,855 INFO L225 Difference]: With dead ends: 74 [2020-07-17 12:11:31,855 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 12:11:31,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 12:11:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-17 12:11:31,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-17 12:11:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-07-17 12:11:31,861 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2020-07-17 12:11:31,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:31,862 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-07-17 12:11:31,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-07-17 12:11:31,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 12:11:31,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:11:31,863 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2020-07-17 12:11:31,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 12:11:31,863 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:11:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:11:31,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1000030502, now seen corresponding path program 1 times [2020-07-17 12:11:31,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:11:31,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507531758] [2020-07-17 12:11:31,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:11:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:11:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:11:31,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507531758] [2020-07-17 12:11:31,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:11:31,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:11:31,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381690544] [2020-07-17 12:11:31,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:11:31,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:11:31,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:11:31,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:11:31,920 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 4 states. [2020-07-17 12:11:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:11:32,012 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2020-07-17 12:11:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:11:32,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-17 12:11:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:11:32,013 INFO L225 Difference]: With dead ends: 111 [2020-07-17 12:11:32,014 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:11:32,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:11:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:11:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:11:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:11:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:11:32,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-07-17 12:11:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:11:32,016 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:11:32,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:11:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:11:32,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:11:32,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 12:11:32,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:11:32,205 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:11:32,206 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|) (= ~m_update~0 |old(~m_update~0)|)) [2020-07-17 12:11:32,206 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:11:32,206 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:11:32,206 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:11:32,206 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:11:32,206 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:11:32,207 INFO L268 CegarLoopResult]: For program point L316(lines 316 331) no Hoare annotation was computed. [2020-07-17 12:11:32,207 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-07-17 12:11:32,207 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-07-17 12:11:32,207 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-07-17 12:11:32,207 INFO L268 CegarLoopResult]: For program point L184(lines 184 199) no Hoare annotation was computed. [2020-07-17 12:11:32,207 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-07-17 12:11:32,207 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-07-17 12:11:32,208 INFO L268 CegarLoopResult]: For program point L300(lines 300 315) no Hoare annotation was computed. [2020-07-17 12:11:32,208 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-07-17 12:11:32,208 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-07-17 12:11:32,208 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-07-17 12:11:32,208 INFO L268 CegarLoopResult]: For program point L284(lines 284 299) no Hoare annotation was computed. [2020-07-17 12:11:32,208 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-07-17 12:11:32,208 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-07-17 12:11:32,209 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-07-17 12:11:32,210 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-07-17 12:11:32,210 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-07-17 12:11:32,210 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-07-17 12:11:32,210 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (and (= 0 main_~q~0) (<= main_~this_state~0 0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-07-17 12:11:32,210 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-07-17 12:11:32,210 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-07-17 12:11:32,210 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-07-17 12:11:32,211 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-07-17 12:11:32,211 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-07-17 12:11:32,211 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-07-17 12:11:32,211 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-07-17 12:11:32,211 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-07-17 12:11:32,211 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-07-17 12:11:32,211 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-07-17 12:11:32,212 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-07-17 12:11:32,212 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-07-17 12:11:32,212 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-07-17 12:11:32,212 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-07-17 12:11:32,212 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-07-17 12:11:32,212 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-07-17 12:11:32,212 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-07-17 12:11:32,213 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-07-17 12:11:32,213 INFO L268 CegarLoopResult]: For program point L28(lines 28 43) no Hoare annotation was computed. [2020-07-17 12:11:32,213 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-07-17 12:11:32,213 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-07-17 12:11:32,213 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-07-17 12:11:32,213 INFO L268 CegarLoopResult]: For program point L80(lines 80 95) no Hoare annotation was computed. [2020-07-17 12:11:32,214 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-07-17 12:11:32,214 INFO L268 CegarLoopResult]: For program point L64(lines 64 79) no Hoare annotation was computed. [2020-07-17 12:11:32,214 INFO L268 CegarLoopResult]: For program point L48(lines 48 63) no Hoare annotation was computed. [2020-07-17 12:11:32,214 INFO L268 CegarLoopResult]: For program point L164(lines 164 179) no Hoare annotation was computed. [2020-07-17 12:11:32,214 INFO L268 CegarLoopResult]: For program point L148(lines 148 163) no Hoare annotation was computed. [2020-07-17 12:11:32,214 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-07-17 12:11:32,215 INFO L268 CegarLoopResult]: For program point L264(lines 264 279) no Hoare annotation was computed. [2020-07-17 12:11:32,215 INFO L268 CegarLoopResult]: For program point L132(lines 132 147) no Hoare annotation was computed. [2020-07-17 12:11:32,215 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-07-17 12:11:32,215 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-07-17 12:11:32,215 INFO L268 CegarLoopResult]: For program point L248(lines 248 263) no Hoare annotation was computed. [2020-07-17 12:11:32,215 INFO L268 CegarLoopResult]: For program point L116(lines 116 131) no Hoare annotation was computed. [2020-07-17 12:11:32,215 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-07-17 12:11:32,216 INFO L268 CegarLoopResult]: For program point L364(lines 364 379) no Hoare annotation was computed. [2020-07-17 12:11:32,216 INFO L268 CegarLoopResult]: For program point L232(lines 232 247) no Hoare annotation was computed. [2020-07-17 12:11:32,216 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-07-17 12:11:32,216 INFO L268 CegarLoopResult]: For program point L100(lines 100 115) no Hoare annotation was computed. [2020-07-17 12:11:32,216 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-17 12:11:32,216 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and (= 0 main_~q~0) .cse0) (and (= 3 main_~q~0) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) (and .cse0 (= 2 main_~q~0)))) [2020-07-17 12:11:32,216 INFO L268 CegarLoopResult]: For program point L348(lines 348 363) no Hoare annotation was computed. [2020-07-17 12:11:32,217 INFO L268 CegarLoopResult]: For program point L216(lines 216 231) no Hoare annotation was computed. [2020-07-17 12:11:32,217 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-07-17 12:11:32,217 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-07-17 12:11:32,217 INFO L268 CegarLoopResult]: For program point L332(lines 332 347) no Hoare annotation was computed. [2020-07-17 12:11:32,217 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-07-17 12:11:32,217 INFO L268 CegarLoopResult]: For program point L200(lines 200 215) no Hoare annotation was computed. [2020-07-17 12:11:32,217 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-07-17 12:11:32,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:11:32 BoogieIcfgContainer [2020-07-17 12:11:32,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:11:32,240 INFO L168 Benchmark]: Toolchain (without parser) took 3987.16 ms. Allocated memory was 146.3 MB in the beginning and 245.4 MB in the end (delta: 99.1 MB). Free memory was 102.8 MB in the beginning and 163.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:11:32,241 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:11:32,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.67 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 181.0 MB in the end (delta: -78.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:11:32,243 INFO L168 Benchmark]: Boogie Preprocessor took 60.39 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 179.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:11:32,244 INFO L168 Benchmark]: RCFGBuilder took 541.13 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 150.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:11:32,245 INFO L168 Benchmark]: TraceAbstraction took 2990.73 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 150.1 MB in the beginning and 163.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:11:32,250 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 388.67 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 181.0 MB in the end (delta: -78.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.39 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 179.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 541.13 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 150.7 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2990.73 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 150.1 MB in the beginning and 163.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((0 == q && this_state <= 0) || (3 == q && 2 == this_state)) || (4 <= q && 3 == this_state)) || (this_state <= 0 && 2 == q) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 == q && this_state <= 0) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1008 SDtfs, 1441 SDslu, 73 SDs, 0 SdLazy, 634 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, 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, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 67 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 153 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 15354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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...