/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:36:22,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:36:22,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:36:22,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:36:22,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:36:22,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:36:22,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:36:22,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:36:22,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:36:22,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:36:22,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:36:22,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:36:22,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:36:22,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:36:22,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:36:22,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:36:22,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:36:22,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:36:22,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:36:22,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:36:22,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:36:22,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:36:22,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:36:22,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:36:22,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:36:22,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:36:22,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:36:22,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:36:22,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:36:22,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:36:22,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:36:22,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:36:22,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:36:22,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:36:22,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:36:22,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:36:22,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:36:22,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:36:22,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:36:22,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:36:22,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:36:22,496 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 [2020-09-25 06:36:22,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:36:22,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:36:22,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:36:22,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:36:22,543 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:36:22,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:36:22,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:36:22,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:36:22,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:36:22,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:36:22,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:36:22,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:36:22,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:36:22,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:36:22,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:36:22,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:36:22,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:36:22,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:36:22,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:36:22,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:36:22,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:36:22,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:36:22,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:36:22,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:36:22,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:36:22,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:36:22,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:36:22,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:36:22,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:36:22,549 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.rcfgbuilder: Size of a code block -> SingleStatement 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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:36:22,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:36:23,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:36:23,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:36:23,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:36:23,007 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:36:23,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 06:36:23,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9695862b7/7e192220bc3e455e9c6477d7056d87be/FLAGa92e56dac [2020-09-25 06:36:23,624 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:36:23,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 06:36:23,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9695862b7/7e192220bc3e455e9c6477d7056d87be/FLAGa92e56dac [2020-09-25 06:36:23,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9695862b7/7e192220bc3e455e9c6477d7056d87be [2020-09-25 06:36:23,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:36:23,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:36:23,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:23,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:36:23,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:36:23,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:23" (1/1) ... [2020-09-25 06:36:23,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe4d0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:23, skipping insertion in model container [2020-09-25 06:36:23,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:23" (1/1) ... [2020-09-25 06:36:23,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:36:24,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:36:24,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:24,281 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:36:24,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:24,316 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:36:24,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24 WrapperNode [2020-09-25 06:36:24,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:24,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:36:24,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:36:24,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:36:24,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (1/1) ... [2020-09-25 06:36:24,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (1/1) ... [2020-09-25 06:36:24,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (1/1) ... [2020-09-25 06:36:24,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (1/1) ... [2020-09-25 06:36:24,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (1/1) ... [2020-09-25 06:36:24,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (1/1) ... [2020-09-25 06:36:24,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (1/1) ... [2020-09-25 06:36:24,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:36:24,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:36:24,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:36:24,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:36:24,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (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 [2020-09-25 06:36:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:36:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:36:24,510 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 06:36:24,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:36:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:36:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:36:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 06:36:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:36:24,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:36:24,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:36:24,717 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:36:24,718 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:36:24,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:24 BoogieIcfgContainer [2020-09-25 06:36:24,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:36:24,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:36:24,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:36:24,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:36:24,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:36:23" (1/3) ... [2020-09-25 06:36:24,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f716234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:24, skipping insertion in model container [2020-09-25 06:36:24,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:24" (2/3) ... [2020-09-25 06:36:24,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f716234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:24, skipping insertion in model container [2020-09-25 06:36:24,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:24" (3/3) ... [2020-09-25 06:36:24,756 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-25 06:36:24,772 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:36:24,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:36:24,822 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:36:24,854 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:36:24,855 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:36:24,855 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:36:24,855 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:36:24,855 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:36:24,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:36:24,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:36:24,856 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:36:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 06:36:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:36:24,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:24,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:24,888 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 06:36:24,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:24,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539520282] [2020-09-25 06:36:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:36:25,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 06:36:25,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:36:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:36:25,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:25,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:25,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:25,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:25,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:25,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:25,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:25,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:25,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:25,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:36:25,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:36:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:36:25,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539520282] [2020-09-25 06:36:25,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:25,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:25,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255781130] [2020-09-25 06:36:25,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:25,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:25,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:25,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:25,434 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 06:36:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:25,540 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 06:36:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:36:25,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:36:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:25,556 INFO L225 Difference]: With dead ends: 44 [2020-09-25 06:36:25,556 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 06:36:25,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:36:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 06:36:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 06:36:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 06:36:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 06:36:25,618 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 06:36:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:25,619 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 06:36:25,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 06:36:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:36:25,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:25,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:25,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:36:25,623 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:25,624 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 06:36:25,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:25,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536294646] [2020-09-25 06:36:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:36:25,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 06:36:25,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:25,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:25,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:25,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:25,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:25,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:25,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:25,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 06:36:25,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:25,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:25,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:36:25,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536294646] [2020-09-25 06:36:25,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:25,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:25,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116659978] [2020-09-25 06:36:25,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:25,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:25,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:25,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:25,999 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 06:36:26,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:26,059 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 06:36:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:26,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:36:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:26,061 INFO L225 Difference]: With dead ends: 36 [2020-09-25 06:36:26,061 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 06:36:26,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:36:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 06:36:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 06:36:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 06:36:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 06:36:26,071 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 06:36:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:26,071 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 06:36:26,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 06:36:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:36:26,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:26,074 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:36:26,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:36:26,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:26,075 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 06:36:26,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:26,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74822286] [2020-09-25 06:36:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:36:27,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:27,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1839 [2020-09-25 06:36:27,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:36:27,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:36:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:27,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:27,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:27,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:27,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:27,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 06:36:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:36:28,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:28,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:28,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:28,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:28,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:28,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:28,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 06:36:28,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:28,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:28,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:28,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:28,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 06:36:28,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74822286] [2020-09-25 06:36:28,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:28,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:36:28,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214186154] [2020-09-25 06:36:28,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:36:28,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:28,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:36:28,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:36:28,438 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-25 06:36:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:28,564 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-25 06:36:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:36:28,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 06:36:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:28,569 INFO L225 Difference]: With dead ends: 47 [2020-09-25 06:36:28,570 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 06:36:28,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:28,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 06:36:28,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 06:36:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 06:36:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 06:36:28,593 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 06:36:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:28,593 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 06:36:28,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:36:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 06:36:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:36:28,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:28,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:28,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:36:28,599 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:28,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:28,600 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-25 06:36:28,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:28,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893214596] [2020-09-25 06:36:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:28,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:28,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:29,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:31,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:36:31,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:36:31,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3248 [2020-09-25 06:36:31,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:31,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:31,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:31,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:36:31,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:36:31,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:31,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:31,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:31,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:31,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:31,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:31,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:32,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:32,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-09-25 06:36:32,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:32,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:32,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:32,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:32,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:32,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:32,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:32,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:32,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:36:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:32,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:32,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:36:32,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893214596] [2020-09-25 06:36:32,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:32,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:32,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753481057] [2020-09-25 06:36:32,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:32,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:32,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:32,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:32,908 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-25 06:36:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:33,006 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-09-25 06:36:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:36:33,007 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:36:33,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:33,009 INFO L225 Difference]: With dead ends: 58 [2020-09-25 06:36:33,009 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 06:36:33,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:36:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 06:36:33,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-09-25 06:36:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 06:36:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 06:36:33,026 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 06:36:33,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:33,026 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 06:36:33,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:33,027 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 06:36:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 06:36:33,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:33,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:33,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:36:33,029 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:33,030 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-25 06:36:33,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:33,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73477158] [2020-09-25 06:36:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 06:36:33,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:33,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-25 06:36:33,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:36:33,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:36:33,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:33,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:33,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:33,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 06:36:33,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:33,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:33,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:33,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:33,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:33,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:36:33,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:33,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:34,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:34,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:34,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:36:34,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:34,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:34,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:36:34,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73477158] [2020-09-25 06:36:34,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:34,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:34,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844560967] [2020-09-25 06:36:34,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:34,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:34,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:34,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:34,042 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 9 states. [2020-09-25 06:36:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:34,130 INFO L93 Difference]: Finished difference Result 63 states and 89 transitions. [2020-09-25 06:36:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:34,130 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 06:36:34,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:34,132 INFO L225 Difference]: With dead ends: 63 [2020-09-25 06:36:34,133 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 06:36:34,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:36:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 06:36:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-09-25 06:36:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:36:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-25 06:36:34,145 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 34 [2020-09-25 06:36:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:34,145 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-25 06:36:34,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-25 06:36:34,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:36:34,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:34,148 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:36:34,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:36:34,148 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:34,149 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 06:36:34,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:34,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406322207] [2020-09-25 06:36:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:34,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:34,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:35,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:36:35,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:36:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1411 [2020-09-25 06:36:35,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:35,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:35,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:36:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:36:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:35,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:35,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:35,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:35,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:35,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:35,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:36,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:36,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-25 06:36:36,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:36,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:36,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:36,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:36:36,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:36,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:36:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:36,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:36,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:36,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:36,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 06:36:36,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406322207] [2020-09-25 06:36:36,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:36,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:36:36,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531761561] [2020-09-25 06:36:36,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:36:36,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:36,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:36:36,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:36:36,101 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 9 states. [2020-09-25 06:36:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:36,181 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2020-09-25 06:36:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:36,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 06:36:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:36,183 INFO L225 Difference]: With dead ends: 78 [2020-09-25 06:36:36,184 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 06:36:36,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:36:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 06:36:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2020-09-25 06:36:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 06:36:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-25 06:36:36,197 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 35 [2020-09-25 06:36:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:36,198 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-25 06:36:36,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:36:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-25 06:36:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:36:36,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:36,200 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:36,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:36:36,201 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:36,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1485744477, now seen corresponding path program 3 times [2020-09-25 06:36:36,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:36,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509024166] [2020-09-25 06:36:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:40,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:36:41,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:36:41,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:36:41,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:36:41,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:41,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:41,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:41,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:41,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:41,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:41,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:41,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:41,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:43,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:43,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2597 [2020-09-25 06:36:43,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:43,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:43,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:36:43,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:43,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:43,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:43,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:36:43,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:43,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:43,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:43,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:36:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 06:36:44,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:44,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:36:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:36:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:44,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:36:44,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:44,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:44,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 06:36:44,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509024166] [2020-09-25 06:36:44,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:44,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:36:44,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276034006] [2020-09-25 06:36:44,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:36:44,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:44,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:36:44,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:36:44,218 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 8 states. [2020-09-25 06:36:44,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:44,339 INFO L93 Difference]: Finished difference Result 142 states and 264 transitions. [2020-09-25 06:36:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:36:44,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 06:36:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:44,342 INFO L225 Difference]: With dead ends: 142 [2020-09-25 06:36:44,342 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 06:36:44,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:36:44,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 06:36:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2020-09-25 06:36:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 06:36:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2020-09-25 06:36:44,361 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 51 [2020-09-25 06:36:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:44,361 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2020-09-25 06:36:44,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:36:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2020-09-25 06:36:44,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 06:36:44,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:44,365 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:44,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:36:44,365 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:44,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 2 times [2020-09-25 06:36:44,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:44,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258470637] [2020-09-25 06:36:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 06:36:49,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:36:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:36:49,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 06:36:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:36:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:36:54,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:36:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:36:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:54,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:54,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 06:36:54,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:54,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:54,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:54,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:54,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:54,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:54,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:54,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:54,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:54,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:36:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:54,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:55,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:36:55,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:55,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 06:36:55,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:55,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:36:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:36:55,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:36:55,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:55,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:55,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:55,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 06:36:55,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:55,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:55,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:36:55,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:55,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:55,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:55,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:55,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:36:55,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:55,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:55,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:55,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:55,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:55,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:55,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:55,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:55,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:36:55,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:55,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:55,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:36:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:55,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:55,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:55,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:36:55,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:55,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 125 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-09-25 06:36:55,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258470637] [2020-09-25 06:36:55,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:55,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:36:55,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869457819] [2020-09-25 06:36:55,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:36:55,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:55,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:36:55,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:36:55,742 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand 10 states. [2020-09-25 06:36:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:55,988 INFO L93 Difference]: Finished difference Result 156 states and 260 transitions. [2020-09-25 06:36:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:36:55,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 06:36:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:55,995 INFO L225 Difference]: With dead ends: 156 [2020-09-25 06:36:55,995 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 06:36:55,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:36:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 06:36:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-25 06:36:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 06:36:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-09-25 06:36:56,021 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 89 [2020-09-25 06:36:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:56,025 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-09-25 06:36:56,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:36:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-09-25 06:36:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 06:36:56,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:56,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:56,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:36:56,029 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash 548806212, now seen corresponding path program 3 times [2020-09-25 06:36:56,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:56,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936395210] [2020-09-25 06:36:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:56,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 06:37:01,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 06:37:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:37:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:37:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:01,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:01,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:01,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:01,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:01,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:01,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:01,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:06,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:37:06,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:37:06,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:37:06,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:06,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:37:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:37:06,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:06,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:06,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:06,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:06,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:37:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 06:37:06,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:06,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:06,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:37:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:06,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:37:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:06,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:06,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:06,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:06,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:37:06,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:06,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:06,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:06,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:06,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 06:37:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:07,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:37:07,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:37:07,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-09-25 06:37:07,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:07,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:07,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:37:07,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:07,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:07,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:07,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:37:07,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:07,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:37:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:07,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 50 proven. 43 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-25 06:37:07,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936395210] [2020-09-25 06:37:07,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:07,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:37:07,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545364776] [2020-09-25 06:37:07,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:37:07,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:07,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:37:07,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:37:07,151 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 9 states. [2020-09-25 06:37:07,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:07,418 INFO L93 Difference]: Finished difference Result 176 states and 277 transitions. [2020-09-25 06:37:07,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:37:07,419 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-09-25 06:37:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:07,421 INFO L225 Difference]: With dead ends: 176 [2020-09-25 06:37:07,422 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 06:37:07,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:37:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 06:37:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2020-09-25 06:37:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 06:37:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2020-09-25 06:37:07,447 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 71 [2020-09-25 06:37:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:07,451 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2020-09-25 06:37:07,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:37:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2020-09-25 06:37:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 06:37:07,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:07,455 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:07,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:37:07,455 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:07,455 INFO L82 PathProgramCache]: Analyzing trace with hash -689211675, now seen corresponding path program 4 times [2020-09-25 06:37:07,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:07,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905971035] [2020-09-25 06:37:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:08,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:08,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:12,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 06:37:12,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 06:37:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 06:37:12,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:12,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:12,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:12,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:12,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:37:12,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:12,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:12,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:12,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:12,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:12,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking...