/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:16,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:16,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:16,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:16,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:16,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:16,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:16,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:16,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:16,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:16,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:16,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:16,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:16,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:16,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:16,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:16,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:16,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:16,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:16,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:16,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:16,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:16,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:16,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:16,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:16,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:16,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:16,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:16,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:16,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:16,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:16,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:16,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:16,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:16,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:16,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:16,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:16,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:16,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:16,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:16,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:16,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:19:16,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:16,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:16,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:16,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:16,487 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:16,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:16,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:16,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:16,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:16,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:16,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:16,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:16,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:16,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:16,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:16,489 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:16,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:16,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:16,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:16,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:16,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:16,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:16,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:16,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:16,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:16,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:16,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:16,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:16,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:16,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:16,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:17,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:17,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:17,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:17,023 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:17,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-21 11:19:17,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54f04fd9d/0032f6ae6bc24096996b361be829fa81/FLAGf19e4db46 [2020-09-21 11:19:17,648 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:17,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/soft_float_4-3a.c.cil.c [2020-09-21 11:19:17,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54f04fd9d/0032f6ae6bc24096996b361be829fa81/FLAGf19e4db46 [2020-09-21 11:19:17,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54f04fd9d/0032f6ae6bc24096996b361be829fa81 [2020-09-21 11:19:17,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:17,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:17,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:17,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:17,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:17,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:17" (1/1) ... [2020-09-21 11:19:17,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75024412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:17, skipping insertion in model container [2020-09-21 11:19:17,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:17" (1/1) ... [2020-09-21 11:19:17,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:18,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:18,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:18,332 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:18,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:18,498 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:18,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18 WrapperNode [2020-09-21 11:19:18,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:18,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:18,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:18,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:18,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... [2020-09-21 11:19:18,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... [2020-09-21 11:19:18,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... [2020-09-21 11:19:18,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... [2020-09-21 11:19:18,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... [2020-09-21 11:19:18,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... [2020-09-21 11:19:18,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... [2020-09-21 11:19:18,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:18,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:18,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:18,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:18,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 11:19:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:19:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-09-21 11:19:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-09-21 11:19:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-09-21 11:19:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:18,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:18,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 11:19:18,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-21 11:19:18,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:19:18,636 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-09-21 11:19:18,636 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-09-21 11:19:18,637 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-09-21 11:19:18,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:18,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:18,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:19,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:19,108 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 11:19:19,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:19 BoogieIcfgContainer [2020-09-21 11:19:19,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:19,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:19,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:19,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:19,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:17" (1/3) ... [2020-09-21 11:19:19,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241d0a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:19, skipping insertion in model container [2020-09-21 11:19:19,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:18" (2/3) ... [2020-09-21 11:19:19,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241d0a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:19, skipping insertion in model container [2020-09-21 11:19:19,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:19" (3/3) ... [2020-09-21 11:19:19,122 INFO L109 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2020-09-21 11:19:19,134 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:19,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:19,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:19,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:19,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:19,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:19,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:19,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:19,195 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:19,195 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:19,195 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-09-21 11:19:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 11:19:19,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:19,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:19,226 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1312098946, now seen corresponding path program 1 times [2020-09-21 11:19:19,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:19,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898145588] [2020-09-21 11:19:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:19,746 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:19,746 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:19,746 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:19,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:19,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 11:19:19,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-21 11:19:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:19:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:19:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 11:19:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:20,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,022 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,023 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:19:20,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,039 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,040 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,040 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,040 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:20,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:20,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:20,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,085 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:20,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 11:19:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:20,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:19:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,172 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:20,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:20,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:20,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 11:19:20,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898145588] [2020-09-21 11:19:20,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:20,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:19:20,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751849862] [2020-09-21 11:19:20,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:19:20,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:20,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:19:20,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:19:20,231 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 9 states. [2020-09-21 11:19:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:20,543 INFO L93 Difference]: Finished difference Result 146 states and 224 transitions. [2020-09-21 11:19:20,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:19:20,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-21 11:19:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:20,562 INFO L225 Difference]: With dead ends: 146 [2020-09-21 11:19:20,563 INFO L226 Difference]: Without dead ends: 86 [2020-09-21 11:19:20,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:19:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-21 11:19:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2020-09-21 11:19:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 11:19:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2020-09-21 11:19:20,640 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 34 [2020-09-21 11:19:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:20,641 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2020-09-21 11:19:20,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:19:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2020-09-21 11:19:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-21 11:19:20,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:20,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:20,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:20,645 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:20,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:20,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1254840644, now seen corresponding path program 1 times [2020-09-21 11:19:20,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:20,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741814175] [2020-09-21 11:19:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,716 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:20,716 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,717 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 11:19:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:19:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:19:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 11:19:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:19:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:20,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:20,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:20,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:20,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,813 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,814 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,814 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,814 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:20,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:20,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:20,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,821 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,821 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,821 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,822 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:20,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:20,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:20,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:20,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:19:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:20,835 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:20,835 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:20,835 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:20,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:20,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:20,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 11:19:20,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741814175] [2020-09-21 11:19:20,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:20,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:19:20,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020884518] [2020-09-21 11:19:20,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:19:20,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:20,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:19:20,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:19:20,882 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand 8 states. [2020-09-21 11:19:20,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:20,988 INFO L93 Difference]: Finished difference Result 140 states and 193 transitions. [2020-09-21 11:19:20,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:19:20,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-21 11:19:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:20,991 INFO L225 Difference]: With dead ends: 140 [2020-09-21 11:19:20,991 INFO L226 Difference]: Without dead ends: 99 [2020-09-21 11:19:20,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:19:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-21 11:19:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2020-09-21 11:19:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-21 11:19:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 114 transitions. [2020-09-21 11:19:21,022 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 114 transitions. Word has length 34 [2020-09-21 11:19:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:21,023 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 114 transitions. [2020-09-21 11:19:21,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:19:21,024 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 114 transitions. [2020-09-21 11:19:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 11:19:21,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:21,026 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:21,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:21,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:21,027 INFO L82 PathProgramCache]: Analyzing trace with hash 894544493, now seen corresponding path program 1 times [2020-09-21 11:19:21,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:21,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568807508] [2020-09-21 11:19:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,153 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,153 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,153 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 11:19:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 11:19:21,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:19:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:19:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:19:21,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,250 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,250 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,251 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,251 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:21,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:21,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,258 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,259 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,259 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:21,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:21,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:21,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:21,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,275 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,276 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,276 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,276 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:21,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:19:21,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:21,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:19:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,316 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,316 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:19:21,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:21,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:19:21,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:19:21,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568807508] [2020-09-21 11:19:21,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:21,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:19:21,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306825114] [2020-09-21 11:19:21,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:19:21,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:21,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:19:21,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:19:21,371 INFO L87 Difference]: Start difference. First operand 84 states and 114 transitions. Second operand 12 states. [2020-09-21 11:19:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:21,574 INFO L93 Difference]: Finished difference Result 152 states and 209 transitions. [2020-09-21 11:19:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:19:21,574 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-09-21 11:19:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:21,577 INFO L225 Difference]: With dead ends: 152 [2020-09-21 11:19:21,577 INFO L226 Difference]: Without dead ends: 111 [2020-09-21 11:19:21,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:19:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-21 11:19:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2020-09-21 11:19:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-21 11:19:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 128 transitions. [2020-09-21 11:19:21,595 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 128 transitions. Word has length 38 [2020-09-21 11:19:21,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:21,595 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 128 transitions. [2020-09-21 11:19:21,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:19:21,596 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 128 transitions. [2020-09-21 11:19:21,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 11:19:21,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:21,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:21,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:19:21,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:21,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:21,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1876990799, now seen corresponding path program 1 times [2020-09-21 11:19:21,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:21,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762713290] [2020-09-21 11:19:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,698 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,698 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,698 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,698 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 11:19:21,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 11:19:21,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:19:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:19:21,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:19:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,796 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:21,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,807 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,808 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,808 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,808 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:21,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:21,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:21,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:21,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:19:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,823 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,824 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,824 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,824 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:19:21,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:19:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:21,872 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:21,873 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:21,873 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:21,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:19:21,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:21,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:21,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:21,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:19:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 11:19:21,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762713290] [2020-09-21 11:19:21,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:21,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:19:21,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041545731] [2020-09-21 11:19:21,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:19:21,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:21,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:19:21,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:19:21,885 INFO L87 Difference]: Start difference. First operand 95 states and 128 transitions. Second operand 9 states. [2020-09-21 11:19:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:22,075 INFO L93 Difference]: Finished difference Result 147 states and 194 transitions. [2020-09-21 11:19:22,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:19:22,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-21 11:19:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:22,081 INFO L225 Difference]: With dead ends: 147 [2020-09-21 11:19:22,082 INFO L226 Difference]: Without dead ends: 107 [2020-09-21 11:19:22,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:19:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-21 11:19:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 85. [2020-09-21 11:19:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-21 11:19:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 111 transitions. [2020-09-21 11:19:22,113 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 111 transitions. Word has length 38 [2020-09-21 11:19:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:22,113 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 111 transitions. [2020-09-21 11:19:22,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:19:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 111 transitions. [2020-09-21 11:19:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:19:22,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:22,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:22,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:19:22,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:22,118 INFO L82 PathProgramCache]: Analyzing trace with hash 2083243036, now seen corresponding path program 1 times [2020-09-21 11:19:22,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:22,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26962831] [2020-09-21 11:19:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-21 11:19:22,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 11:19:22,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:19:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 11:19:22,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 11:19:22,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,311 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,311 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:22,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,316 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:22,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:22,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:22,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,321 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,322 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:22,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:22,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:19:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,332 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,332 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,332 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:19:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 11:19:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,369 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,369 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,369 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,370 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:19:22,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:22,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 11:19:22,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26962831] [2020-09-21 11:19:22,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:22,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:19:22,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306389458] [2020-09-21 11:19:22,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:19:22,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:22,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:19:22,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:19:22,379 INFO L87 Difference]: Start difference. First operand 85 states and 111 transitions. Second operand 9 states. [2020-09-21 11:19:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:22,531 INFO L93 Difference]: Finished difference Result 134 states and 178 transitions. [2020-09-21 11:19:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:19:22,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-21 11:19:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:22,534 INFO L225 Difference]: With dead ends: 134 [2020-09-21 11:19:22,534 INFO L226 Difference]: Without dead ends: 111 [2020-09-21 11:19:22,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:19:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-21 11:19:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2020-09-21 11:19:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-21 11:19:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 137 transitions. [2020-09-21 11:19:22,555 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 137 transitions. Word has length 42 [2020-09-21 11:19:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:22,555 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 137 transitions. [2020-09-21 11:19:22,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:19:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 137 transitions. [2020-09-21 11:19:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:19:22,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:22,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:22,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:19:22,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2140501338, now seen corresponding path program 1 times [2020-09-21 11:19:22,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:22,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733716030] [2020-09-21 11:19:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,649 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:22,650 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,650 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,650 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-21 11:19:22,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 11:19:22,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:19:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:19:22,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:19:22,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 11:19:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,762 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,762 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,762 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:22,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,767 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:22,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:19:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,777 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,777 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,777 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:22,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:19:22,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:19:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:19:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,815 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,815 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,815 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,816 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:22,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:22,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:22,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 11:19:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,824 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,824 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,824 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 11:19:22,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733716030] [2020-09-21 11:19:22,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:22,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:19:22,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549028714] [2020-09-21 11:19:22,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:19:22,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:22,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:19:22,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:19:22,834 INFO L87 Difference]: Start difference. First operand 103 states and 137 transitions. Second operand 8 states. [2020-09-21 11:19:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:22,930 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2020-09-21 11:19:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:19:22,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-21 11:19:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:22,933 INFO L225 Difference]: With dead ends: 163 [2020-09-21 11:19:22,933 INFO L226 Difference]: Without dead ends: 126 [2020-09-21 11:19:22,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:19:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-21 11:19:22,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 113. [2020-09-21 11:19:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-21 11:19:22,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 148 transitions. [2020-09-21 11:19:22,946 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 148 transitions. Word has length 42 [2020-09-21 11:19:22,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:22,947 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 148 transitions. [2020-09-21 11:19:22,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:19:22,947 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 148 transitions. [2020-09-21 11:19:22,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:19:22,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:22,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:22,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:19:22,949 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:22,950 INFO L82 PathProgramCache]: Analyzing trace with hash 424074718, now seen corresponding path program 1 times [2020-09-21 11:19:22,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:22,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453349124] [2020-09-21 11:19:22,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:22,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:22,982 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:22,982 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:22,982 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 11:19:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:19:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 11:19:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:19:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,053 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,054 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,054 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:23,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:23,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,059 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,059 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,059 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:23,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:23,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:23,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:23,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,069 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,069 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,070 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,070 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:19:23,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:19:23,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:19:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:19:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,102 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,103 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,103 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,103 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:19:23,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:23,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:19:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:19:23,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:19:23,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453349124] [2020-09-21 11:19:23,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:23,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:19:23,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145360894] [2020-09-21 11:19:23,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:19:23,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:23,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:19:23,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:19:23,114 INFO L87 Difference]: Start difference. First operand 113 states and 148 transitions. Second operand 8 states. [2020-09-21 11:19:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:23,219 INFO L93 Difference]: Finished difference Result 177 states and 237 transitions. [2020-09-21 11:19:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:19:23,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-21 11:19:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:23,221 INFO L225 Difference]: With dead ends: 177 [2020-09-21 11:19:23,221 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 11:19:23,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:19:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 11:19:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 140. [2020-09-21 11:19:23,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-21 11:19:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-09-21 11:19:23,235 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 42 [2020-09-21 11:19:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:23,235 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-09-21 11:19:23,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:19:23,236 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-09-21 11:19:23,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:19:23,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:23,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:23,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:19:23,237 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:23,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash 481333020, now seen corresponding path program 2 times [2020-09-21 11:19:23,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:23,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729071464] [2020-09-21 11:19:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,356 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,356 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,356 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,356 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 11:19:23,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 11:19:23,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:19:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 11:19:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 11:19:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:23,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,539 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,539 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,539 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,539 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:23,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:23,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:23,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:23,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:19:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,560 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,560 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,560 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,560 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:19:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:19:23,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:19:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,569 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,569 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,569 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,570 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:19:23,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:19:23,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:19:23,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:19:23,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:23,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:19:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:23,621 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:23,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:23,622 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:23,622 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:23,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:19:23,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:23,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:19:23,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:23,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:23,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:23,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:19:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:19:23,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729071464] [2020-09-21 11:19:23,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:23,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-21 11:19:23,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414809656] [2020-09-21 11:19:23,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 11:19:23,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:23,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 11:19:23,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:19:23,633 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 13 states. [2020-09-21 11:19:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:23,973 INFO L93 Difference]: Finished difference Result 223 states and 299 transitions. [2020-09-21 11:19:23,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:19:23,974 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-09-21 11:19:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:23,976 INFO L225 Difference]: With dead ends: 223 [2020-09-21 11:19:23,976 INFO L226 Difference]: Without dead ends: 192 [2020-09-21 11:19:23,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:19:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-21 11:19:23,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 178. [2020-09-21 11:19:23,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 11:19:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 234 transitions. [2020-09-21 11:19:23,992 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 234 transitions. Word has length 42 [2020-09-21 11:19:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:23,993 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 234 transitions. [2020-09-21 11:19:23,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 11:19:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 234 transitions. [2020-09-21 11:19:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:19:23,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:23,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:23,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:19:23,995 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:23,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2004765024, now seen corresponding path program 1 times [2020-09-21 11:19:23,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:23,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730026359] [2020-09-21 11:19:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:19:24,015 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:19:24,016 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:19:24,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:19:24,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:19:24 BoogieIcfgContainer [2020-09-21 11:19:24,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:19:24,050 INFO L168 Benchmark]: Toolchain (without parser) took 6077.66 ms. Allocated memory was 138.4 MB in the beginning and 298.8 MB in the end (delta: 160.4 MB). Free memory was 101.5 MB in the beginning and 207.2 MB in the end (delta: -105.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:24,051 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:19:24,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.12 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 178.4 MB in the end (delta: -77.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:24,052 INFO L168 Benchmark]: Boogie Preprocessor took 54.31 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 177.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:24,053 INFO L168 Benchmark]: RCFGBuilder took 559.40 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 152.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:24,054 INFO L168 Benchmark]: TraceAbstraction took 4931.55 ms. Allocated memory was 201.3 MB in the beginning and 298.8 MB in the end (delta: 97.5 MB). Free memory was 151.3 MB in the beginning and 207.2 MB in the end (delta: -55.9 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:24,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 524.12 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.8 MB in the beginning and 178.4 MB in the end (delta: -77.6 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.31 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 177.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.40 ms. Allocated memory is still 201.3 MB. Free memory was 176.4 MB in the beginning and 152.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4931.55 ms. Allocated memory was 201.3 MB in the beginning and 298.8 MB in the end (delta: 97.5 MB). Free memory was 151.3 MB in the beginning and 207.2 MB in the end (delta: -55.9 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 100, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L216] unsigned int a ; [L217] unsigned int ma = __VERIFIER_nondet_uint(); [L218] signed char ea = __VERIFIER_nondet_char(); [L219] unsigned int b ; [L220] unsigned int mb = __VERIFIER_nondet_uint(); [L221] signed char eb = __VERIFIER_nondet_char(); [L222] unsigned int r_add1 ; [L223] unsigned int r_add2 ; [L224] unsigned int zero ; [L225] int tmp ; [L226] int tmp___0 ; [L227] int __retres14 ; [L231] CALL, EXPR base2flt(0, 0) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND TRUE ! m [L20] __retres4 = 0U [L70] return (__retres4); [L231] RET, EXPR base2flt(0, 0) [L231] zero = base2flt(0, 0) [L232] CALL, EXPR base2flt(ma, ea) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND TRUE m >= 1U << 25U [L54] COND TRUE e >= 127 [L55] __retres4 = 4294967295U [L70] return (__retres4); [L232] RET, EXPR base2flt(ma, ea) [L232] a = base2flt(ma, ea) [L233] CALL, EXPR base2flt(mb, eb) [L15] unsigned int res ; [L16] unsigned int __retres4 ; [L19] COND FALSE !(! m) [L25] COND FALSE !(m < 1U << 24U) [L47] COND TRUE 1 [L49] COND FALSE !(m >= 1U << 25U) [L66] m = m & ~ (1U << 24U) [L67] res = m | ((unsigned int )(e + 128) << 24U) [L68] __retres4 = res [L70] return (__retres4); [L233] RET, EXPR base2flt(mb, eb) [L233] b = base2flt(mb, eb) [L234] CALL addflt(a, b) [L74] unsigned int res ; [L75] unsigned int ma ; [L76] unsigned int mb ; [L77] unsigned int delta ; [L78] int ea ; [L79] int eb ; [L80] unsigned int tmp ; [L81] unsigned int __retres10 ; [L84] COND FALSE !(a < b) [L91] COND FALSE !(! b) [L98] ma = a & ((1U << 24U) - 1U) [L99] ea = (int )(a >> 24U) - 128 [L100] ma = ma | (1U << 24U) [L101] mb = b & ((1U << 24U) - 1U) [L102] eb = (int )(b >> 24U) - 128 [L103] mb = mb | (1U << 24U) [L104] CALL __VERIFIER_assert(ea >= eb) [L6] COND TRUE !(cond) [L7] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 669 SDtfs, 265 SDslu, 4746 SDs, 0 SdLazy, 672 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 107 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 30149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 119/134 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...