/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/Fibonacci02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:56:38,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:56:38,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:56:38,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:56:38,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:56:38,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:56:38,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:56:38,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:56:38,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:56:38,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:56:38,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:56:38,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:56:38,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:56:38,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:56:38,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:56:38,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:56:38,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:56:38,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:56:38,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:56:38,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:56:38,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:56:38,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:56:38,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:56:38,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:56:38,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 10:56:38,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:56:38,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:56:38,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:56:38,135 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 10:56:38,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:56:38,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:56:38,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:56:38,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:56:38,176 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:56:38,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:56:38,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:56:38,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:56:38,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:56:38,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:56:38,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:56:38,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:56:38,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:56:38,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:56:38,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:56:38,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:56:38,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:56:38,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:56:38,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:56:38,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:56:38,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:56:38,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:56:38,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:56:38,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:56:38,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:56:38,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:56:38,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:56:38,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:56:38,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:56:38,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:56:38,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:56:38,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:56:38,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:56:38,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:56:38,501 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:56:38,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci02.c [2020-07-07 10:56:38,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9319196ec/a26afdf8805446daa1a8dd058e607219/FLAGac8a8cd2d [2020-07-07 10:56:39,022 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:56:39,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci02.c [2020-07-07 10:56:39,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9319196ec/a26afdf8805446daa1a8dd058e607219/FLAGac8a8cd2d [2020-07-07 10:56:39,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9319196ec/a26afdf8805446daa1a8dd058e607219 [2020-07-07 10:56:39,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:56:39,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:56:39,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:39,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:56:39,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:56:39,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1962bef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39, skipping insertion in model container [2020-07-07 10:56:39,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:56:39,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:56:39,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:39,579 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:56:39,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:56:39,605 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:56:39,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39 WrapperNode [2020-07-07 10:56:39,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:56:39,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:56:39,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:56:39,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:56:39,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (1/1) ... [2020-07-07 10:56:39,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:56:39,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:56:39,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:56:39,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:56:39,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (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 10:56:39,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:56:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:56:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-07 10:56:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:56:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:56:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 10:56:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-07 10:56:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:56:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:56:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:56:39,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:56:39,959 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 10:56:39,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:39 BoogieIcfgContainer [2020-07-07 10:56:39,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:56:39,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:56:39,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:56:39,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:56:39,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:56:39" (1/3) ... [2020-07-07 10:56:39,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e861669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:39, skipping insertion in model container [2020-07-07 10:56:39,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:56:39" (2/3) ... [2020-07-07 10:56:39,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e861669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:56:39, skipping insertion in model container [2020-07-07 10:56:39,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:56:39" (3/3) ... [2020-07-07 10:56:39,971 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2020-07-07 10:56:39,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:56:39,987 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:56:40,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:56:40,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:56:40,026 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:56:40,026 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:56:40,026 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:56:40,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:56:40,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:56:40,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:56:40,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:56:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-07 10:56:40,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 10:56:40,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:40,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:40,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1356498376, now seen corresponding path program 1 times [2020-07-07 10:56:40,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:40,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777747763] [2020-07-07 10:56:40,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,259 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 10:56:40,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777747763] [2020-07-07 10:56:40,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:40,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 10:56:40,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132872337] [2020-07-07 10:56:40,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 10:56:40,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 10:56:40,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 10:56:40,293 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2020-07-07 10:56:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:40,399 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-07-07 10:56:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 10:56:40,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-07 10:56:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:40,413 INFO L225 Difference]: With dead ends: 33 [2020-07-07 10:56:40,413 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 10:56:40,417 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 10:56:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 10:56:40,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-07 10:56:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 10:56:40,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-07 10:56:40,472 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-07-07 10:56:40,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:40,473 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-07 10:56:40,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 10:56:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-07 10:56:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 10:56:40,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:40,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:40,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:56:40,477 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:40,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:40,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1591396412, now seen corresponding path program 1 times [2020-07-07 10:56:40,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:40,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542703867] [2020-07-07 10:56:40,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,610 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 10:56:40,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542703867] [2020-07-07 10:56:40,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:56:40,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 10:56:40,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539391775] [2020-07-07 10:56:40,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 10:56:40,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 10:56:40,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 10:56:40,615 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-07-07 10:56:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:40,684 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-07-07 10:56:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 10:56:40,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-07 10:56:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:40,687 INFO L225 Difference]: With dead ends: 27 [2020-07-07 10:56:40,687 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 10:56:40,689 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 10:56:40,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 10:56:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-07 10:56:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 10:56:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-07-07 10:56:40,698 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-07-07 10:56:40,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:40,698 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-07-07 10:56:40,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 10:56:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-07-07 10:56:40,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 10:56:40,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:40,700 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 10:56:40,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:56:40,701 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:40,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:40,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1761048597, now seen corresponding path program 1 times [2020-07-07 10:56:40,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:40,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099108454] [2020-07-07 10:56:40,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,850 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 10:56:40,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099108454] [2020-07-07 10:56:40,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927000312] [2020-07-07 10:56:40,851 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 10:56:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:40,909 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-07 10:56:40,916 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:40,991 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 10:56:40,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:40,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-07-07 10:56:40,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693822444] [2020-07-07 10:56:40,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 10:56:40,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:40,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 10:56:40,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-07 10:56:40,994 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 9 states. [2020-07-07 10:56:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:41,119 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-07-07 10:56:41,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 10:56:41,120 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-07 10:56:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:41,121 INFO L225 Difference]: With dead ends: 38 [2020-07-07 10:56:41,122 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 10:56:41,123 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 10:56:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 10:56:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-07 10:56:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 10:56:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-07 10:56:41,131 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2020-07-07 10:56:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:41,132 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-07 10:56:41,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 10:56:41,132 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-07 10:56:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 10:56:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:41,134 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 10:56:41,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 10:56:41,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash -624449707, now seen corresponding path program 1 times [2020-07-07 10:56:41,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:41,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426431263] [2020-07-07 10:56:41,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,507 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 10:56:41,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426431263] [2020-07-07 10:56:41,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956353570] [2020-07-07 10:56:41,508 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) [2020-07-07 10:56:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,542 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:41,545 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:41,564 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 10:56:41,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:41,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-07-07 10:56:41,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600543460] [2020-07-07 10:56:41,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 10:56:41,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:41,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 10:56:41,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-07 10:56:41,567 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 8 states. [2020-07-07 10:56:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:41,672 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2020-07-07 10:56:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 10:56:41,673 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-07 10:56:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:41,675 INFO L225 Difference]: With dead ends: 41 [2020-07-07 10:56:41,675 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 10:56:41,676 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 10:56:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 10:56:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-07 10:56:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-07 10:56:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2020-07-07 10:56:41,686 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 27 [2020-07-07 10:56:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:41,687 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2020-07-07 10:56:41,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 10:56:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2020-07-07 10:56:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 10:56:41,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:41,689 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 10:56:41,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:41,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash -111055954, now seen corresponding path program 2 times [2020-07-07 10:56:41,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:41,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166119618] [2020-07-07 10:56:41,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,135 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 10:56:42,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166119618] [2020-07-07 10:56:42,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227600394] [2020-07-07 10:56:42,136 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 10:56:42,181 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:56:42,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:42,182 INFO L264 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 10:56:42,187 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:42,270 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 10:56:42,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:42,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2020-07-07 10:56:42,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300338984] [2020-07-07 10:56:42,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 10:56:42,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:42,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 10:56:42,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-07-07 10:56:42,276 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 13 states. [2020-07-07 10:56:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:42,501 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2020-07-07 10:56:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 10:56:42,502 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-07-07 10:56:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:42,504 INFO L225 Difference]: With dead ends: 72 [2020-07-07 10:56:42,505 INFO L226 Difference]: Without dead ends: 41 [2020-07-07 10:56:42,506 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 10:56:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-07 10:56:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-07 10:56:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-07 10:56:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-07-07 10:56:42,516 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 40 [2020-07-07 10:56:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:42,517 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-07-07 10:56:42,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 10:56:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-07-07 10:56:42,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-07 10:56:42,520 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:42,520 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:42,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:42,734 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash -383842586, now seen corresponding path program 3 times [2020-07-07 10:56:42,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:42,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102657902] [2020-07-07 10:56:42,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-07 10:56:42,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102657902] [2020-07-07 10:56:42,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082534432] [2020-07-07 10:56:42,966 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 10:56:43,004 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-07-07 10:56:43,004 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:43,005 INFO L264 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-07 10:56:43,009 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-07 10:56:43,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:43,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 13 [2020-07-07 10:56:43,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857183864] [2020-07-07 10:56:43,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 10:56:43,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:43,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 10:56:43,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-07 10:56:43,047 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 13 states. [2020-07-07 10:56:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:43,212 INFO L93 Difference]: Finished difference Result 88 states and 127 transitions. [2020-07-07 10:56:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 10:56:43,213 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2020-07-07 10:56:43,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:43,215 INFO L225 Difference]: With dead ends: 88 [2020-07-07 10:56:43,216 INFO L226 Difference]: Without dead ends: 53 [2020-07-07 10:56:43,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-07 10:56:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-07 10:56:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-07-07 10:56:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-07 10:56:43,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-07-07 10:56:43,227 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 68 [2020-07-07 10:56:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:43,228 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-07-07 10:56:43,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 10:56:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-07-07 10:56:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-07-07 10:56:43,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:43,231 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:43,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:43,446 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1110256604, now seen corresponding path program 4 times [2020-07-07 10:56:43,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:43,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87861291] [2020-07-07 10:56:43,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-07 10:56:43,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87861291] [2020-07-07 10:56:43,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611621348] [2020-07-07 10:56:43,868 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 10:56:43,934 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-07-07 10:56:43,934 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:43,935 INFO L264 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-07 10:56:43,942 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 57 proven. 377 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2020-07-07 10:56:43,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:43,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 14 [2020-07-07 10:56:43,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661069007] [2020-07-07 10:56:43,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 10:56:43,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:43,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 10:56:43,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-07-07 10:56:43,995 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 14 states. [2020-07-07 10:56:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:44,210 INFO L93 Difference]: Finished difference Result 120 states and 179 transitions. [2020-07-07 10:56:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 10:56:44,212 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 150 [2020-07-07 10:56:44,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:44,219 INFO L225 Difference]: With dead ends: 120 [2020-07-07 10:56:44,220 INFO L226 Difference]: Without dead ends: 116 [2020-07-07 10:56:44,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-07-07 10:56:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-07 10:56:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2020-07-07 10:56:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-07 10:56:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 162 transitions. [2020-07-07 10:56:44,261 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 162 transitions. Word has length 150 [2020-07-07 10:56:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:44,263 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 162 transitions. [2020-07-07 10:56:44,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 10:56:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 162 transitions. [2020-07-07 10:56:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-07-07 10:56:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:44,274 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:44,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 10:56:44,490 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:44,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1442326180, now seen corresponding path program 5 times [2020-07-07 10:56:44,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:44,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253822118] [2020-07-07 10:56:44,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2020-07-07 10:56:45,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253822118] [2020-07-07 10:56:45,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775014] [2020-07-07 10:56:45,061 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 10:56:45,161 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-07-07 10:56:45,162 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:45,163 INFO L264 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 10:56:45,170 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:45,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 328 proven. 115 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-07-07 10:56:45,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:45,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 16 [2020-07-07 10:56:45,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335598106] [2020-07-07 10:56:45,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 10:56:45,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:45,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 10:56:45,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-07 10:56:45,230 INFO L87 Difference]: Start difference. First operand 107 states and 162 transitions. Second operand 16 states. [2020-07-07 10:56:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:45,472 INFO L93 Difference]: Finished difference Result 244 states and 409 transitions. [2020-07-07 10:56:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 10:56:45,475 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 177 [2020-07-07 10:56:45,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:45,484 INFO L225 Difference]: With dead ends: 244 [2020-07-07 10:56:45,486 INFO L226 Difference]: Without dead ends: 240 [2020-07-07 10:56:45,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-07-07 10:56:45,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-07-07 10:56:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 228. [2020-07-07 10:56:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-07-07 10:56:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 388 transitions. [2020-07-07 10:56:45,543 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 388 transitions. Word has length 177 [2020-07-07 10:56:45,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:45,544 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 388 transitions. [2020-07-07 10:56:45,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 10:56:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 388 transitions. [2020-07-07 10:56:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-07-07 10:56:45,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:45,566 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 10:56:45,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:45,782 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:45,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1242507885, now seen corresponding path program 6 times [2020-07-07 10:56:45,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:45,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771377614] [2020-07-07 10:56:45,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 844 proven. 1612 refuted. 0 times theorem prover too weak. 4664 trivial. 0 not checked. [2020-07-07 10:56:47,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771377614] [2020-07-07 10:56:47,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608947022] [2020-07-07 10:56:47,120 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 10:56:47,219 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2020-07-07 10:56:47,220 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:47,221 INFO L264 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 10:56:47,229 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 356 proven. 1124 refuted. 0 times theorem prover too weak. 5640 trivial. 0 not checked. [2020-07-07 10:56:47,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:47,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 10] total 26 [2020-07-07 10:56:47,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361146825] [2020-07-07 10:56:47,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 10:56:47,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:47,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 10:56:47,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2020-07-07 10:56:47,357 INFO L87 Difference]: Start difference. First operand 228 states and 388 transitions. Second operand 26 states. [2020-07-07 10:56:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:48,115 INFO L93 Difference]: Finished difference Result 346 states and 678 transitions. [2020-07-07 10:56:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 10:56:48,116 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 354 [2020-07-07 10:56:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:48,119 INFO L225 Difference]: With dead ends: 346 [2020-07-07 10:56:48,119 INFO L226 Difference]: Without dead ends: 127 [2020-07-07 10:56:48,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2020-07-07 10:56:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-07 10:56:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2020-07-07 10:56:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-07 10:56:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 142 transitions. [2020-07-07 10:56:48,136 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 142 transitions. Word has length 354 [2020-07-07 10:56:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:48,137 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 142 transitions. [2020-07-07 10:56:48,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 10:56:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 142 transitions. [2020-07-07 10:56:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-07-07 10:56:48,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:48,147 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:48,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:56:48,362 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:48,363 INFO L82 PathProgramCache]: Analyzing trace with hash -768599631, now seen corresponding path program 7 times [2020-07-07 10:56:48,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:48,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267112161] [2020-07-07 10:56:48,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2020-07-07 10:56:49,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267112161] [2020-07-07 10:56:49,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875634514] [2020-07-07 10:56:49,976 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 10:56:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:50,117 INFO L264 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 10:56:50,124 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2020-07-07 10:56:50,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:50,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 20 [2020-07-07 10:56:50,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138557245] [2020-07-07 10:56:50,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 10:56:50,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:50,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 10:56:50,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2020-07-07 10:56:50,278 INFO L87 Difference]: Start difference. First operand 102 states and 142 transitions. Second operand 20 states. [2020-07-07 10:56:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:56:50,610 INFO L93 Difference]: Finished difference Result 364 states and 557 transitions. [2020-07-07 10:56:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 10:56:50,611 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 463 [2020-07-07 10:56:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:56:50,617 INFO L225 Difference]: With dead ends: 364 [2020-07-07 10:56:50,618 INFO L226 Difference]: Without dead ends: 360 [2020-07-07 10:56:50,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-07-07 10:56:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-07-07 10:56:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2020-07-07 10:56:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-07-07 10:56:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 521 transitions. [2020-07-07 10:56:50,674 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 521 transitions. Word has length 463 [2020-07-07 10:56:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:56:50,676 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 521 transitions. [2020-07-07 10:56:50,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 10:56:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 521 transitions. [2020-07-07 10:56:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2020-07-07 10:56:50,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:56:50,704 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:56:50,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-07 10:56:50,918 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:56:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:56:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1616877860, now seen corresponding path program 8 times [2020-07-07 10:56:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:56:50,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570128970] [2020-07-07 10:56:50,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:56:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:56:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-07 10:56:56,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570128970] [2020-07-07 10:56:56,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89422451] [2020-07-07 10:56:56,069 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 10:56:56,343 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 10:56:56,343 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:56:56,367 INFO L264 TraceCheckSpWp]: Trace formula consists of 1664 conjuncts, 439 conjunts are in the unsatisfiable core [2020-07-07 10:56:56,402 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:56:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-07 10:56:59,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:56:59,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-07-07 10:56:59,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443688205] [2020-07-07 10:56:59,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-07 10:56:59,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:56:59,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-07 10:56:59,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 10:56:59,275 INFO L87 Difference]: Start difference. First operand 342 states and 521 transitions. Second operand 36 states. [2020-07-07 10:57:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:00,068 INFO L93 Difference]: Finished difference Result 619 states and 1120 transitions. [2020-07-07 10:57:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-07 10:57:00,069 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 749 [2020-07-07 10:57:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:00,085 INFO L225 Difference]: With dead ends: 619 [2020-07-07 10:57:00,085 INFO L226 Difference]: Without dead ends: 615 [2020-07-07 10:57:00,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1190 GetRequests, 1099 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2020-07-07 10:57:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-07-07 10:57:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 430. [2020-07-07 10:57:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-07-07 10:57:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 719 transitions. [2020-07-07 10:57:00,141 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 719 transitions. Word has length 749 [2020-07-07 10:57:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:00,142 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 719 transitions. [2020-07-07 10:57:00,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-07 10:57:00,143 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 719 transitions. [2020-07-07 10:57:00,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2020-07-07 10:57:00,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:57:00,151 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 90, 55, 55, 55, 55, 55, 55, 55, 35, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 10:57:00,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:00,365 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:57:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:57:00,366 INFO L82 PathProgramCache]: Analyzing trace with hash 968622799, now seen corresponding path program 9 times [2020-07-07 10:57:00,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:57:00,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803117780] [2020-07-07 10:57:00,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:57:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:57:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 34365 backedges. 847 proven. 3214 refuted. 0 times theorem prover too weak. 30304 trivial. 0 not checked. [2020-07-07 10:57:03,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803117780] [2020-07-07 10:57:03,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942569960] [2020-07-07 10:57:03,551 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:03,733 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2020-07-07 10:57:03,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 10:57:03,736 INFO L264 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-07 10:57:03,747 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 10:57:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 34365 backedges. 883 proven. 4452 refuted. 0 times theorem prover too weak. 29030 trivial. 0 not checked. [2020-07-07 10:57:04,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 10:57:04,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 20 [2020-07-07 10:57:04,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260408565] [2020-07-07 10:57:04,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-07 10:57:04,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:57:04,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-07 10:57:04,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-07-07 10:57:04,282 INFO L87 Difference]: Start difference. First operand 430 states and 719 transitions. Second operand 20 states. [2020-07-07 10:57:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:57:04,791 INFO L93 Difference]: Finished difference Result 960 states and 2172 transitions. [2020-07-07 10:57:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 10:57:04,792 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 763 [2020-07-07 10:57:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:57:04,794 INFO L225 Difference]: With dead ends: 960 [2020-07-07 10:57:04,795 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 10:57:04,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 984 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2020-07-07 10:57:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 10:57:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 10:57:04,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 10:57:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 10:57:04,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 763 [2020-07-07 10:57:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:57:04,808 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 10:57:04,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-07 10:57:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 10:57:04,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 10:57:05,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 10:57:05,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 10:57:06,276 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 7 [2020-07-07 10:57:07,326 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 203 DAG size of output: 55 [2020-07-07 10:57:07,330 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2020-07-07 10:57:07,331 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-07-07 10:57:07,331 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (not (<= |fibonacci_#in~n| 1)) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-07 10:57:07,331 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-07-07 10:57:07,332 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (not (<= |fibonacci_#in~n| 1)) (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= 9 |fibonacci_#in~n|) (<= |fibonacci_#t~ret0| 21) .cse0 (<= 21 |fibonacci_#t~ret0|)) (and .cse0 (<= 10 |fibonacci_#in~n|)) (and (<= |fibonacci_#t~ret0| 2) (<= fibonacci_~n 4) (<= 2 |fibonacci_#t~ret0|) (<= 4 |fibonacci_#in~n|) .cse0) (and (<= |fibonacci_#t~ret0| 3) (<= fibonacci_~n 5) (<= 3 |fibonacci_#t~ret0|) .cse0 (<= 5 fibonacci_~n)) (and (<= |fibonacci_#t~ret0| 8) (<= 8 |fibonacci_#t~ret0|) (<= fibonacci_~n 7) .cse0 (<= 7 |fibonacci_#in~n|)) (and (<= fibonacci_~n 8) (<= |fibonacci_#t~ret0| 13) (<= 8 |fibonacci_#in~n|) .cse0 (<= 13 |fibonacci_#t~ret0|)) (and (<= 5 |fibonacci_#t~ret0|) (<= fibonacci_~n 6) (<= |fibonacci_#t~ret0| 5) (<= 6 fibonacci_~n) .cse0) (and (<= |fibonacci_#t~ret0| 1) (<= 1 |fibonacci_#t~ret0|) .cse0 (<= |fibonacci_#in~n| 3))))) [2020-07-07 10:57:07,332 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2020-07-07 10:57:07,332 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-07-07 10:57:07,332 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-07-07 10:57:07,332 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2020-07-07 10:57:07,332 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 10:57:07,333 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 10:57:07,333 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 10:57:07,333 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 10:57:07,333 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 10:57:07,333 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 10:57:07,333 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2020-07-07 10:57:07,334 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-07 10:57:07,334 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 33) the Hoare annotation is: true [2020-07-07 10:57:07,334 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 33) no Hoare annotation was computed. [2020-07-07 10:57:07,334 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-07-07 10:57:07,334 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~x~0 9) (<= 9 main_~x~0)) [2020-07-07 10:57:07,334 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-07-07 10:57:07,335 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 33) no Hoare annotation was computed. [2020-07-07 10:57:07,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:57:07 BoogieIcfgContainer [2020-07-07 10:57:07,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:57:07,343 INFO L168 Benchmark]: Toolchain (without parser) took 27960.01 ms. Allocated memory was 146.3 MB in the beginning and 1.1 GB in the end (delta: 938.0 MB). Free memory was 104.8 MB in the beginning and 825.9 MB in the end (delta: -721.1 MB). Peak memory consumption was 956.2 MB. Max. memory is 7.1 GB. [2020-07-07 10:57:07,344 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 10:57:07,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.63 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-07 10:57:07,346 INFO L168 Benchmark]: Boogie Preprocessor took 26.03 ms. Allocated memory is still 146.3 MB. Free memory was 95.2 MB in the beginning and 93.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-07 10:57:07,346 INFO L168 Benchmark]: RCFGBuilder took 331.08 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.8 MB in the beginning and 172.0 MB in the end (delta: -78.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-07 10:57:07,347 INFO L168 Benchmark]: TraceAbstraction took 27376.93 ms. Allocated memory was 203.9 MB in the beginning and 1.1 GB in the end (delta: 880.3 MB). Free memory was 171.3 MB in the beginning and 825.9 MB in the end (delta: -654.6 MB). Peak memory consumption was 965.1 MB. Max. memory is 7.1 GB. [2020-07-07 10:57:07,351 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 221.63 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 95.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.03 ms. Allocated memory is still 146.3 MB. Free memory was 95.2 MB in the beginning and 93.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.08 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.8 MB in the beginning and 172.0 MB in the end (delta: -78.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27376.93 ms. Allocated memory was 203.9 MB in the beginning and 1.1 GB in the end (delta: 880.3 MB). Free memory was 171.3 MB in the beginning and 825.9 MB in the end (delta: -654.6 MB). Peak memory consumption was 965.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 31]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.0s, OverallIterations: 12, TraceHistogramMax: 111, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 319 SDtfs, 622 SDslu, 2135 SDs, 0 SdLazy, 2802 SolverSat, 721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4042 GetRequests, 3778 SyntacticMatches, 57 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=430occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 254 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 803 PreInvPairs, 1294 NumberOfFragments, 139 HoareAnnotationTreeSize, 803 FomulaSimplifications, 10173 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 8 FomulaSimplificationsInter, 9016 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 5661 NumberOfCodeBlocks, 4961 NumberOfCodeBlocksAsserted, 98 NumberOfCheckSat, 5639 ConstructedInterpolants, 0 QuantifiedInterpolants, 7403765 SizeOfPredicates, 52 NumberOfNonLiveVariables, 4691 ConjunctsInSsa, 542 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 141777/180078 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...