/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/recursive-simple/fibo_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:11:51,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:11:51,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:11:51,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:11:51,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:11:51,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:11:51,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:11:51,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:11:51,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:11:51,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:11:51,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:11:51,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:11:51,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:11:51,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:11:51,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:11:51,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:11:51,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:11:51,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:11:51,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:11:51,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:11:51,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:11:51,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:11:51,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:11:51,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:11:51,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:11:52,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:11:52,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:11:52,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:11:52,013 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 [2020-07-07 11:11:52,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:11:52,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:11:52,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:11:52,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:11:52,047 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:11:52,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:11:52,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:11:52,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:11:52,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:11:52,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:11:52,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:11:52,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:11:52,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:11:52,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:11:52,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:11:52,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:11:52,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:11:52,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:11:52,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:11:52,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:11:52,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:11:52,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:11:52,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:11:52,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:11:52,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:11:52,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:11:52,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:11:52,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:11:52,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:11:52,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:11:52,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:11:52,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:11:52,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:11:52,412 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:11:52,413 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:11:52,414 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-07-07 11:11:52,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18feca5b/350d1b2511cb46259ddccc5152a39bf2/FLAG3ac4c06b5 [2020-07-07 11:11:53,112 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:11:53,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-07-07 11:11:53,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18feca5b/350d1b2511cb46259ddccc5152a39bf2/FLAG3ac4c06b5 [2020-07-07 11:11:53,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18feca5b/350d1b2511cb46259ddccc5152a39bf2 [2020-07-07 11:11:53,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:11:53,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:11:53,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:11:53,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:11:53,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:11:53,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68acb741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53, skipping insertion in model container [2020-07-07 11:11:53,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:11:53,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:11:53,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:11:53,718 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:11:53,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:11:53,754 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:11:53,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53 WrapperNode [2020-07-07 11:11:53,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:11:53,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:11:53,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:11:53,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:11:53,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (1/1) ... [2020-07-07 11:11:53,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:11:53,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:11:53,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:11:53,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:11:53,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (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 [2020-07-07 11:11:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:11:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:11:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-07-07 11:11:53,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-07-07 11:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:11:53,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:11:54,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:11:54,203 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:11:54,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:11:54 BoogieIcfgContainer [2020-07-07 11:11:54,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:11:54,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:11:54,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:11:54,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:11:54,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:11:53" (1/3) ... [2020-07-07 11:11:54,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ebe84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:11:54, skipping insertion in model container [2020-07-07 11:11:54,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:11:53" (2/3) ... [2020-07-07 11:11:54,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ebe84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:11:54, skipping insertion in model container [2020-07-07 11:11:54,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:11:54" (3/3) ... [2020-07-07 11:11:54,221 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-07-07 11:11:54,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:11:54,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:11:54,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:11:54,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:11:54,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:11:54,282 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:11:54,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:11:54,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:11:54,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:11:54,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:11:54,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:11:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-07 11:11:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:11:54,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:54,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:54,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-07-07 11:11:54,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:54,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364813252] [2020-07-07 11:11:54,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:11:54,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364813252] [2020-07-07 11:11:54,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:11:54,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:11:54,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71999150] [2020-07-07 11:11:54,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:11:54,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:11:54,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:11:54,699 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-07 11:11:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:54,826 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-07 11:11:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:11:54,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-07 11:11:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:54,846 INFO L225 Difference]: With dead ends: 35 [2020-07-07 11:11:54,847 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 11:11:54,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:11:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 11:11:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-07 11:11:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 11:11:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-07 11:11:54,905 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-07-07 11:11:54,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:54,906 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-07 11:11:54,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:11:54,906 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-07 11:11:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:11:54,909 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:54,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:54,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:11:54,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:54,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:54,911 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-07-07 11:11:54,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:54,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374052604] [2020-07-07 11:11:54,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:11:55,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374052604] [2020-07-07 11:11:55,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:11:55,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:11:55,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457838218] [2020-07-07 11:11:55,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:11:55,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:55,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:11:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:11:55,014 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-07-07 11:11:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:55,085 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-07-07 11:11:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:11:55,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-07 11:11:55,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:55,088 INFO L225 Difference]: With dead ends: 27 [2020-07-07 11:11:55,089 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 11:11:55,091 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 [2020-07-07 11:11:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 11:11:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-07 11:11:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 11:11:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-07 11:11:55,101 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-07-07 11:11:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:55,102 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-07 11:11:55,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:11:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-07 11:11:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 11:11:55,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:55,104 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] [2020-07-07 11:11:55,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:11:55,105 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:55,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-07-07 11:11:55,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:55,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479358074] [2020-07-07 11:11:55,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 11:11:55,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479358074] [2020-07-07 11:11:55,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888463408] [2020-07-07 11:11:55,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-07 11:11:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,358 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:11:55,367 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 11:11:55,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:55,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-07-07 11:11:55,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615789201] [2020-07-07 11:11:55,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:11:55,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:55,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:11:55,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:11:55,503 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 9 states. [2020-07-07 11:11:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:55,664 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-07-07 11:11:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:11:55,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-07 11:11:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:55,667 INFO L225 Difference]: With dead ends: 38 [2020-07-07 11:11:55,668 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 11:11:55,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:11:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 11:11:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-07 11:11:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 11:11:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-07 11:11:55,680 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-07-07 11:11:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:55,680 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-07 11:11:55,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:11:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-07 11:11:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 11:11:55,682 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:55,683 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] [2020-07-07 11:11:55,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:11:55,899 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:55,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2020-07-07 11:11:55,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:55,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66607103] [2020-07-07 11:11:55,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-07 11:11:56,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66607103] [2020-07-07 11:11:56,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123772769] [2020-07-07 11:11:56,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-07 11:11:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,153 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 11:11:56,155 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-07 11:11:56,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:56,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-07-07 11:11:56,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455437705] [2020-07-07 11:11:56,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:11:56,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:11:56,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:11:56,182 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 8 states. [2020-07-07 11:11:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:56,337 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-07-07 11:11:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:11:56,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-07 11:11:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:56,341 INFO L225 Difference]: With dead ends: 41 [2020-07-07 11:11:56,341 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 11:11:56,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:11:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 11:11:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-07 11:11:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-07 11:11:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-07-07 11:11:56,355 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-07-07 11:11:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:56,356 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-07-07 11:11:56,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:11:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-07-07 11:11:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 11:11:56,358 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:56,359 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] [2020-07-07 11:11:56,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:56,576 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:56,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:56,578 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2020-07-07 11:11:56,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:56,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883316792] [2020-07-07 11:11:56,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-07 11:11:56,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883316792] [2020-07-07 11:11:56,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022121534] [2020-07-07 11:11:56,771 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-07-07 11:11:56,813 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:11:56,814 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:56,815 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 11:11:56,819 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-07 11:11:56,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:56,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2020-07-07 11:11:56,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217982816] [2020-07-07 11:11:56,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 11:11:56,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:56,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 11:11:56,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:11:56,895 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 13 states. [2020-07-07 11:11:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:57,170 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2020-07-07 11:11:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 11:11:57,173 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-07-07 11:11:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:57,176 INFO L225 Difference]: With dead ends: 72 [2020-07-07 11:11:57,176 INFO L226 Difference]: Without dead ends: 41 [2020-07-07 11:11:57,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-07-07 11:11:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-07 11:11:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-07 11:11:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-07 11:11:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-07 11:11:57,209 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2020-07-07 11:11:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:57,213 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-07 11:11:57,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 11:11:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-07 11:11:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-07 11:11:57,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:57,228 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:57,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:57,443 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:57,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1986920854, now seen corresponding path program 3 times [2020-07-07 11:11:57,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:57,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788854167] [2020-07-07 11:11:57,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 80 proven. 101 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-07-07 11:11:58,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788854167] [2020-07-07 11:11:58,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165995825] [2020-07-07 11:11:58,050 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-07-07 11:11:58,111 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-07-07 11:11:58,112 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:58,114 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 11:11:58,120 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:11:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 89 proven. 32 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-07-07 11:11:58,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:11:58,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 17 [2020-07-07 11:11:58,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123802947] [2020-07-07 11:11:58,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 11:11:58,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:11:58,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 11:11:58,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-07-07 11:11:58,207 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 17 states. [2020-07-07 11:11:58,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:11:58,659 INFO L93 Difference]: Finished difference Result 98 states and 155 transitions. [2020-07-07 11:11:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 11:11:58,660 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-07-07 11:11:58,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:11:58,664 INFO L225 Difference]: With dead ends: 98 [2020-07-07 11:11:58,664 INFO L226 Difference]: Without dead ends: 66 [2020-07-07 11:11:58,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-07-07 11:11:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-07 11:11:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-07-07 11:11:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-07 11:11:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2020-07-07 11:11:58,685 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 82 [2020-07-07 11:11:58,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:11:58,686 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2020-07-07 11:11:58,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 11:11:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2020-07-07 11:11:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-07-07 11:11:58,693 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:11:58,693 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:11:58,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:11:58,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:11:58,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:11:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash 706081956, now seen corresponding path program 4 times [2020-07-07 11:11:58,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:11:58,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432033083] [2020-07-07 11:11:58,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:11:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:11:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 403 proven. 706 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2020-07-07 11:11:59,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432033083] [2020-07-07 11:11:59,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877918050] [2020-07-07 11:11:59,805 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2020-07-07 11:11:59,884 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 11:11:59,885 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:11:59,886 INFO L264 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 11:11:59,896 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:12:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 108 proven. 716 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2020-07-07 11:12:00,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:12:00,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 22 [2020-07-07 11:12:00,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666494759] [2020-07-07 11:12:00,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-07 11:12:00,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:12:00,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-07 11:12:00,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2020-07-07 11:12:00,005 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand 22 states. [2020-07-07 11:12:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:12:00,619 INFO L93 Difference]: Finished difference Result 142 states and 253 transitions. [2020-07-07 11:12:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 11:12:00,620 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 218 [2020-07-07 11:12:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:12:00,623 INFO L225 Difference]: With dead ends: 142 [2020-07-07 11:12:00,623 INFO L226 Difference]: Without dead ends: 87 [2020-07-07 11:12:00,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=304, Invalid=956, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 11:12:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-07 11:12:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2020-07-07 11:12:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-07 11:12:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 109 transitions. [2020-07-07 11:12:00,641 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 109 transitions. Word has length 218 [2020-07-07 11:12:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:12:00,642 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 109 transitions. [2020-07-07 11:12:00,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-07 11:12:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 109 transitions. [2020-07-07 11:12:00,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-07 11:12:00,647 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:12:00,647 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:12:00,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 11:12:00,861 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:12:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:12:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1425621089, now seen corresponding path program 5 times [2020-07-07 11:12:00,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:12:00,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603343575] [2020-07-07 11:12:00,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:12:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-07-07 11:12:02,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603343575] [2020-07-07 11:12:02,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276290878] [2020-07-07 11:12:02,594 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-07-07 11:12:02,811 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2020-07-07 11:12:02,812 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:12:02,835 INFO L264 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 167 conjunts are in the unsatisfiable core [2020-07-07 11:12:02,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:12:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2020-07-07 11:12:03,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:12:04,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2020-07-07 11:12:04,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494303662] [2020-07-07 11:12:04,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-07 11:12:04,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:12:04,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-07 11:12:04,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-07-07 11:12:04,002 INFO L87 Difference]: Start difference. First operand 80 states and 109 transitions. Second operand 28 states. [2020-07-07 11:12:04,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:12:04,554 INFO L93 Difference]: Finished difference Result 123 states and 189 transitions. [2020-07-07 11:12:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 11:12:04,555 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 286 [2020-07-07 11:12:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:12:04,563 INFO L225 Difference]: With dead ends: 123 [2020-07-07 11:12:04,563 INFO L226 Difference]: Without dead ends: 119 [2020-07-07 11:12:04,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 407 SyntacticMatches, 21 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-07-07 11:12:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-07 11:12:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2020-07-07 11:12:04,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-07-07 11:12:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 157 transitions. [2020-07-07 11:12:04,589 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 157 transitions. Word has length 286 [2020-07-07 11:12:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:12:04,590 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 157 transitions. [2020-07-07 11:12:04,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-07 11:12:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 157 transitions. [2020-07-07 11:12:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-07-07 11:12:04,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:12:04,598 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 35, 21, 21, 21, 21, 21, 21, 21, 14, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:12:04,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:04,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:12:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:12:04,814 INFO L82 PathProgramCache]: Analyzing trace with hash -431356766, now seen corresponding path program 6 times [2020-07-07 11:12:04,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:12:04,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134904901] [2020-07-07 11:12:04,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:12:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 329 proven. 859 refuted. 0 times theorem prover too weak. 3859 trivial. 0 not checked. [2020-07-07 11:12:05,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134904901] [2020-07-07 11:12:05,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60929594] [2020-07-07 11:12:05,814 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-07-07 11:12:05,972 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2020-07-07 11:12:05,972 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:12:05,975 INFO L264 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 11:12:05,985 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:12:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 1712 proven. 17 refuted. 0 times theorem prover too weak. 3318 trivial. 0 not checked. [2020-07-07 11:12:06,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:12:06,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2020-07-07 11:12:06,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8109663] [2020-07-07 11:12:06,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 11:12:06,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:12:06,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 11:12:06,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-07 11:12:06,175 INFO L87 Difference]: Start difference. First operand 103 states and 157 transitions. Second operand 14 states. [2020-07-07 11:12:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:12:06,339 INFO L93 Difference]: Finished difference Result 185 states and 301 transitions. [2020-07-07 11:12:06,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:12:06,342 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 300 [2020-07-07 11:12:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:12:06,345 INFO L225 Difference]: With dead ends: 185 [2020-07-07 11:12:06,345 INFO L226 Difference]: Without dead ends: 96 [2020-07-07 11:12:06,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-07-07 11:12:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-07 11:12:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2020-07-07 11:12:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-07 11:12:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2020-07-07 11:12:06,384 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 300 [2020-07-07 11:12:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:12:06,385 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2020-07-07 11:12:06,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 11:12:06,385 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2020-07-07 11:12:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-07 11:12:06,394 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:12:06,394 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:12:06,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:06,609 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:12:06,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:12:06,610 INFO L82 PathProgramCache]: Analyzing trace with hash -530192014, now seen corresponding path program 7 times [2020-07-07 11:12:06,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:12:06,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354975973] [2020-07-07 11:12:06,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:12:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1307 proven. 1260 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2020-07-07 11:12:07,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354975973] [2020-07-07 11:12:07,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968342516] [2020-07-07 11:12:07,936 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:08,093 INFO L264 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-07 11:12:08,128 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:12:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1091 proven. 467 refuted. 0 times theorem prover too weak. 4481 trivial. 0 not checked. [2020-07-07 11:12:08,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:12:08,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 28 [2020-07-07 11:12:08,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811265997] [2020-07-07 11:12:08,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-07 11:12:08,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:12:08,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-07 11:12:08,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-07-07 11:12:08,394 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand 28 states. [2020-07-07 11:12:09,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:12:09,575 INFO L93 Difference]: Finished difference Result 218 states and 414 transitions. [2020-07-07 11:12:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-07-07 11:12:09,575 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 327 [2020-07-07 11:12:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:12:09,579 INFO L225 Difference]: With dead ends: 218 [2020-07-07 11:12:09,579 INFO L226 Difference]: Without dead ends: 123 [2020-07-07 11:12:09,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=520, Invalid=2132, Unknown=0, NotChecked=0, Total=2652 [2020-07-07 11:12:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-07 11:12:09,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2020-07-07 11:12:09,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-07 11:12:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 141 transitions. [2020-07-07 11:12:09,597 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 141 transitions. Word has length 327 [2020-07-07 11:12:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:12:09,598 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 141 transitions. [2020-07-07 11:12:09,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-07 11:12:09,598 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 141 transitions. [2020-07-07 11:12:09,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-07-07 11:12:09,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:12:09,605 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:12:09,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-07 11:12:09,820 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:12:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:12:09,821 INFO L82 PathProgramCache]: Analyzing trace with hash -617256294, now seen corresponding path program 8 times [2020-07-07 11:12:09,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:12:09,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524698650] [2020-07-07 11:12:09,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:12:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:12:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 913 proven. 1281 refuted. 0 times theorem prover too weak. 4926 trivial. 0 not checked. [2020-07-07 11:12:11,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524698650] [2020-07-07 11:12:11,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955836264] [2020-07-07 11:12:11,274 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:11,395 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:12:11,396 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:12:11,399 INFO L264 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 11:12:11,405 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:12:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 419 proven. 1507 refuted. 0 times theorem prover too weak. 5194 trivial. 0 not checked. [2020-07-07 11:12:11,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:12:11,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 25 [2020-07-07 11:12:11,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058398084] [2020-07-07 11:12:11,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 11:12:11,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:12:11,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 11:12:11,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2020-07-07 11:12:11,591 INFO L87 Difference]: Start difference. First operand 109 states and 141 transitions. Second operand 25 states. [2020-07-07 11:12:12,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:12:12,190 INFO L93 Difference]: Finished difference Result 210 states and 288 transitions. [2020-07-07 11:12:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 11:12:12,191 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 354 [2020-07-07 11:12:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:12:12,192 INFO L225 Difference]: With dead ends: 210 [2020-07-07 11:12:12,192 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:12:12,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 11:12:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:12:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:12:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:12:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:12:12,195 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 354 [2020-07-07 11:12:12,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:12:12,195 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:12:12,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 11:12:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:12:12,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:12:12,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:12:12,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:12:13,228 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 42 [2020-07-07 11:12:13,422 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 6 [2020-07-07 11:12:13,428 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:12:13,428 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:12:13,428 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:12:13,429 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:12:13,429 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:12:13,429 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:12:13,429 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-07-07 11:12:13,429 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2020-07-07 11:12:13,429 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-07-07 11:12:13,430 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-07-07 11:12:13,430 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 7 main_~x~0) (<= main_~x~0 7)) [2020-07-07 11:12:13,430 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2020-07-07 11:12:13,430 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-07 11:12:13,430 INFO L268 CegarLoopResult]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2020-07-07 11:12:13,430 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2020-07-07 11:12:13,430 INFO L268 CegarLoopResult]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2020-07-07 11:12:13,430 INFO L268 CegarLoopResult]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2020-07-07 11:12:13,431 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (= fibo_~n |fibo_#in~n|) (< 1 fibo_~n)) [2020-07-07 11:12:13,431 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-07 11:12:13,431 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (and (= fibo_~n |fibo_#in~n|) (let ((.cse0 (<= 1 |fibo_#t~ret0|)) (.cse1 (<= |fibo_#t~ret0| 1))) (or (and (<= 3 |fibo_#t~ret0|) (<= 5 fibo_~n) (<= |fibo_#t~ret0| 3) (<= fibo_~n 5)) (and (<= 5 |fibo_#t~ret0|) (<= |fibo_#in~n| 6) (<= |fibo_#t~ret0| 5) (<= 6 |fibo_#in~n|)) (<= 8 |fibo_#in~n|) (and (<= fibo_~n 4) (<= |fibo_#t~ret0| 2) (<= 2 |fibo_#t~ret0|) (<= 4 fibo_~n)) (and (<= |fibo_#t~ret0| 8) (<= 7 |fibo_#in~n|) (<= 8 |fibo_#t~ret0|)) (and .cse0 .cse1 (< 1 fibo_~n) (<= fibo_~n 2)) (and .cse0 .cse1 (<= 3 |fibo_#in~n|) (<= |fibo_#in~n| 3))))) [2020-07-07 11:12:13,431 INFO L268 CegarLoopResult]: For program point L8(lines 8 12) no Hoare annotation was computed. [2020-07-07 11:12:13,431 INFO L268 CegarLoopResult]: For program point L11-3(line 11) no Hoare annotation was computed. [2020-07-07 11:12:13,432 INFO L268 CegarLoopResult]: For program point L6(lines 6 12) no Hoare annotation was computed. [2020-07-07 11:12:13,432 INFO L271 CegarLoopResult]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2020-07-07 11:12:13,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:12:13 BoogieIcfgContainer [2020-07-07 11:12:13,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:12:13,441 INFO L168 Benchmark]: Toolchain (without parser) took 19950.42 ms. Allocated memory was 143.7 MB in the beginning and 582.0 MB in the end (delta: 438.3 MB). Free memory was 100.3 MB in the beginning and 361.5 MB in the end (delta: -261.1 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:13,442 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 143.7 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:12:13,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.40 ms. Allocated memory is still 143.7 MB. Free memory was 100.1 MB in the beginning and 90.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:13,443 INFO L168 Benchmark]: Boogie Preprocessor took 34.99 ms. Allocated memory is still 143.7 MB. Free memory was 90.9 MB in the beginning and 89.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:13,444 INFO L168 Benchmark]: RCFGBuilder took 416.45 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 89.5 MB in the beginning and 169.6 MB in the end (delta: -80.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:13,445 INFO L168 Benchmark]: TraceAbstraction took 19228.07 ms. Allocated memory was 201.3 MB in the beginning and 582.0 MB in the end (delta: 380.6 MB). Free memory was 169.0 MB in the beginning and 361.5 MB in the end (delta: -192.5 MB). Peak memory consumption was 188.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:12:13,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 143.7 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.40 ms. Allocated memory is still 143.7 MB. Free memory was 100.1 MB in the beginning and 90.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.99 ms. Allocated memory is still 143.7 MB. Free memory was 90.9 MB in the beginning and 89.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 416.45 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 89.5 MB in the beginning and 169.6 MB in the end (delta: -80.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19228.07 ms. Allocated memory was 201.3 MB in the beginning and 582.0 MB in the end (delta: 380.6 MB). Free memory was 169.0 MB in the beginning and 361.5 MB in the end (delta: -192.5 MB). Peak memory consumption was 188.1 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: 18.1s, OverallIterations: 11, TraceHistogramMax: 51, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 294 SDtfs, 618 SDslu, 1804 SDs, 0 SdLazy, 2694 SolverSat, 727 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2443 GetRequests, 2196 SyntacticMatches, 21 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=10, 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, 45 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 275 PreInvPairs, 431 NumberOfFragments, 102 HoareAnnotationTreeSize, 275 FomulaSimplifications, 1446 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2886 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 3347 NumberOfCodeBlocks, 3265 NumberOfCodeBlocksAsserted, 101 NumberOfCheckSat, 3327 ConstructedInterpolants, 0 QuantifiedInterpolants, 1804061 SizeOfPredicates, 43 NumberOfNonLiveVariables, 3488 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 41449/51444 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...