/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_7-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:36:44,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:36:44,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:36:45,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:36:45,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:36:45,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:36:45,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:36:45,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:36:45,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:36:45,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:36:45,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:36:45,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:36:45,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:36:45,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:36:45,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:36:45,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:36:45,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:36:45,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:36:45,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:36:45,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:36:45,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:36:45,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:36:45,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:36:45,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:36:45,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:36:45,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:36:45,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:36:45,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:36:45,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:36:45,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:36:45,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:36:45,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:36:45,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:36:45,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:36:45,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:36:45,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:36:45,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:36:45,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:36:45,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:36:45,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:36:45,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:36:45,105 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 06:36:45,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:36:45,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:36:45,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:36:45,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:36:45,158 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:36:45,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:36:45,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:36:45,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:36:45,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:36:45,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:36:45,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:36:45,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:36:45,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:36:45,161 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:36:45,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:36:45,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:36:45,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:36:45,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:36:45,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:36:45,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:36:45,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:36:45,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:36:45,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:36:45,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:36:45,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:36:45,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:36:45,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:36:45,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:36:45,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:36:45,165 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 06:36:45,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:36:45,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:36:45,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:36:45,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:36:45,639 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:36:45,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-25 06:36:45,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6591da2f/857fa525cb674b5fa1a9b12568f746e3/FLAG4d036e495 [2020-09-25 06:36:46,254 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:36:46,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-1.c [2020-09-25 06:36:46,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6591da2f/857fa525cb674b5fa1a9b12568f746e3/FLAG4d036e495 [2020-09-25 06:36:46,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6591da2f/857fa525cb674b5fa1a9b12568f746e3 [2020-09-25 06:36:46,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:36:46,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:36:46,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:46,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:36:46,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:36:46,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46, skipping insertion in model container [2020-09-25 06:36:46,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:36:46,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:36:46,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:46,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:36:46,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:36:46,920 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:36:46,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46 WrapperNode [2020-09-25 06:36:46,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:36:46,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:36:46,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:36:46,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:36:46,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (1/1) ... [2020-09-25 06:36:46,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:36:46,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:36:46,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:36:46,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:36:46,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (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 06:36:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:36:47,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:36:47,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 06:36:47,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:36:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:36:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:36:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 06:36:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:36:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:36:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:36:47,332 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:36:47,332 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:36:47,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:47 BoogieIcfgContainer [2020-09-25 06:36:47,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:36:47,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:36:47,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:36:47,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:36:47,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:36:46" (1/3) ... [2020-09-25 06:36:47,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:47, skipping insertion in model container [2020-09-25 06:36:47,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:36:46" (2/3) ... [2020-09-25 06:36:47,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:36:47, skipping insertion in model container [2020-09-25 06:36:47,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:36:47" (3/3) ... [2020-09-25 06:36:47,348 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-1.c [2020-09-25 06:36:47,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:36:47,376 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:36:47,412 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:36:47,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:36:47,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:36:47,464 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:36:47,464 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:36:47,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:36:47,465 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:36:47,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:36:47,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:36:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 06:36:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 06:36:47,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:47,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:47,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:47,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:47,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 06:36:47,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:47,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079849031] [2020-09-25 06:36:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:47,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:47,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:47,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:36:47,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 06:36:47,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:47,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:47,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:36:47,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:36:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:47,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:47,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:47,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:47,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:47,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:47,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:47,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:47,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:47,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:47,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:36:47,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:47,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:47,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:47,826 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 06:36:47,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079849031] [2020-09-25 06:36:47,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:47,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:47,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210031586] [2020-09-25 06:36:47,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:47,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:47,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:47,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:47,854 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 06:36:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:47,978 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 06:36:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:47,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 06:36:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:47,993 INFO L225 Difference]: With dead ends: 44 [2020-09-25 06:36:47,993 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 06:36:47,998 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 06:36:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 06:36:48,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 06:36:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 06:36:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 06:36:48,050 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 06:36:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:48,051 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 06:36:48,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 06:36:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 06:36:48,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:48,053 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 06:36:48,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:36:48,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:48,055 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 06:36:48,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:48,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479834043] [2020-09-25 06:36:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:48,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:36:48,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:36:48,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:48,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:48,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:36:48,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:48,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:48,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:48,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:48,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:36:48,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:48,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:36:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:48,266 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 06:36:48,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479834043] [2020-09-25 06:36:48,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:36:48,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:36:48,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089954041] [2020-09-25 06:36:48,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:36:48,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:48,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:36:48,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:36:48,271 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 06:36:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:48,351 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 06:36:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:36:48,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 06:36:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:48,354 INFO L225 Difference]: With dead ends: 36 [2020-09-25 06:36:48,354 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 06:36:48,355 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 06:36:48,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 06:36:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 06:36:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 06:36:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 06:36:48,364 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 06:36:48,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:48,364 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 06:36:48,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:36:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 06:36:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 06:36:48,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:48,367 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 06:36:48,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:36:48,367 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:48,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:48,368 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 06:36:48,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:48,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352297056] [2020-09-25 06:36:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 06:36:49,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 06:36:49,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:36:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:36:49,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:49,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:49,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:49,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:36:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 06:36:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:49,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:49,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:36:49,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:36:49,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:49,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:49,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:36:49,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:49,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:49,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:36:49,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352297056] [2020-09-25 06:36:49,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:49,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:36:49,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398224000] [2020-09-25 06:36:49,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:36:49,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:49,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:36:49,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:36:49,436 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 06:36:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:49,531 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-25 06:36:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:36:49,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 06:36:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:49,537 INFO L225 Difference]: With dead ends: 44 [2020-09-25 06:36:49,537 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 06:36:49,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:36:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 06:36:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-25 06:36:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 06:36:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 06:36:49,555 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 06:36:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:49,558 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 06:36:49,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:36:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 06:36:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 06:36:49,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:49,563 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 06:36:49,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:36:49,564 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 06:36:49,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:49,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675426972] [2020-09-25 06:36:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:50,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:36:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-09-25 06:36:50,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:50,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:36:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:50,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:50,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:36:50,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:50,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:50,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:36:50,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:36:50,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-25 06:36:50,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:50,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:36:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:50,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:50,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:50,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:36:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:50,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:50,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:50,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:50,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:36:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:50,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:50,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:36:50,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:50,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:50,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:36:50,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 06:36:50,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675426972] [2020-09-25 06:36:50,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:50,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:36:50,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506938334] [2020-09-25 06:36:50,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:36:50,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:50,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:36:50,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:36:50,689 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-25 06:36:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:50,851 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-25 06:36:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:36:50,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 06:36:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:50,862 INFO L225 Difference]: With dead ends: 88 [2020-09-25 06:36:50,862 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 06:36:50,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:36:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 06:36:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 06:36:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 06:36:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-25 06:36:50,891 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-25 06:36:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:50,892 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-25 06:36:50,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:36:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-25 06:36:50,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 06:36:50,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:50,898 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 06:36:50,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:36:50,898 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:50,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-25 06:36:50,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:50,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472595204] [2020-09-25 06:36:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:51,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:51,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:55,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 06:36:55,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:36:55,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:55,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:36:55,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:36:55,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:36:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:55,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:36:55,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:36:55,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:55,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:55,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:55,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:55,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:36:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:55,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:58,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:36:58,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:36:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2934 [2020-09-25 06:36:58,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:58,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:36:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:36:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:36:58,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:36:58,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:58,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:36:58,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:36:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 06:36:58,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:58,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:36:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:58,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:36:58,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:58,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:36:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:58,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:58,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:58,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:36:58,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:58,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:58,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:36:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:59,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:36:59,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:36:59,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:59,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:36:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:36:59,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:36:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:59,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:36:59,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:36:59,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:36:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:36:59,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:36:59,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:36:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:36:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:36:59,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:36:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:36:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 06:36:59,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472595204] [2020-09-25 06:36:59,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:36:59,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:36:59,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592716627] [2020-09-25 06:36:59,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:36:59,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:36:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:36:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:36:59,057 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 6 states. [2020-09-25 06:36:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:36:59,137 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-09-25 06:36:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:36:59,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-25 06:36:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:36:59,141 INFO L225 Difference]: With dead ends: 70 [2020-09-25 06:36:59,141 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 06:36:59,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:36:59,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 06:36:59,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-09-25 06:36:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 06:36:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 81 transitions. [2020-09-25 06:36:59,154 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 81 transitions. Word has length 51 [2020-09-25 06:36:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:36:59,155 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 81 transitions. [2020-09-25 06:36:59,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:36:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 81 transitions. [2020-09-25 06:36:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 06:36:59,166 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:36:59,166 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:36:59,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:36:59,167 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:36:59,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:36:59,167 INFO L82 PathProgramCache]: Analyzing trace with hash 809102171, now seen corresponding path program 2 times [2020-09-25 06:36:59,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:36:59,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38763943] [2020-09-25 06:36:59,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:36:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:36:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:36:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 06:37:04,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:04,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:04,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:09,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 06:37:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:37:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:37:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:09,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:37:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 06:37:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:37:09,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:09,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:37:09,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:09,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 06:37:09,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:09,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:37:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:09,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:09,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:09,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:09,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:37:09,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:09,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:09,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:09,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:09,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:09,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:37:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:37:09,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:09,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:37:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:09,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 06:37:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:10,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:10,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:37:10,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:37:10,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1312 [2020-09-25 06:37:10,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:10,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:10,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 06:37:10,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:10,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:10,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:10,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:10,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:37:10,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:10,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:10,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:10,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 06:37:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 06:37:10,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:10,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:10,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:37:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:10,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:10,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:10,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:10,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:10,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:10,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:10,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:10,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:37:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:10,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:10,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:10,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:10,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:10,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:10,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:10,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:10,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:10,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 61 proven. 77 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 06:37:10,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38763943] [2020-09-25 06:37:10,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:10,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:37:10,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917153553] [2020-09-25 06:37:10,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:37:10,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:10,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:37:10,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:37:10,982 INFO L87 Difference]: Start difference. First operand 58 states and 81 transitions. Second operand 11 states. [2020-09-25 06:37:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:11,148 INFO L93 Difference]: Finished difference Result 109 states and 153 transitions. [2020-09-25 06:37:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:37:11,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-09-25 06:37:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:11,150 INFO L225 Difference]: With dead ends: 109 [2020-09-25 06:37:11,150 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 06:37:11,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:37:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 06:37:11,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-09-25 06:37:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 06:37:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-09-25 06:37:11,160 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 85 [2020-09-25 06:37:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:11,160 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-09-25 06:37:11,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:37:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-09-25 06:37:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 06:37:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:11,162 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:11,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:37:11,162 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 06:37:11,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:11,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171675713] [2020-09-25 06:37:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 06:37:16,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:37:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:37:16,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:37:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:37:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:16,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:16,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:16,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:16,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:16,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:16,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:17,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:19,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:19,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 06:37:21,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 06:37:21,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:37:21,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:37:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:37:21,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 06:37:21,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:37:21,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 06:37:21,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:37:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:21,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:21,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:37:21,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:21,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:21,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:21,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:21,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:37:21,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:21,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:21,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:37:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:21,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:37:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:21,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:23,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:37:23,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:37:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1840 [2020-09-25 06:37:23,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:23,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:37:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:37:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:23,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:37:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:37:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:23,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:37:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:23,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:23,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:37:23,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:23,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:23,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:23,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:23,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:23,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:37:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:23,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:23,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:37:23,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:23,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:23,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:37:23,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 79 proven. 60 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-09-25 06:37:23,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171675713] [2020-09-25 06:37:23,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:23,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:37:23,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396998168] [2020-09-25 06:37:23,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:37:23,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:23,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:37:23,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:37:23,444 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 8 states. [2020-09-25 06:37:23,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:23,692 INFO L93 Difference]: Finished difference Result 135 states and 189 transitions. [2020-09-25 06:37:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:37:23,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 06:37:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:23,701 INFO L225 Difference]: With dead ends: 135 [2020-09-25 06:37:23,701 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 06:37:23,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:37:23,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 06:37:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2020-09-25 06:37:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 06:37:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-09-25 06:37:23,733 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 87 [2020-09-25 06:37:23,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:23,735 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-09-25 06:37:23,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:37:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-09-25 06:37:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 06:37:23,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:23,737 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:23,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:37:23,738 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:23,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash -758395752, now seen corresponding path program 4 times [2020-09-25 06:37:23,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:23,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261893046] [2020-09-25 06:37:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:24,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:25,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:26,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:27,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:28,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:28,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:37:28,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:37:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:37:28,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:28,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:37:28,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 06:37:28,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:28,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:28,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:28,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:28,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:28,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:28,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:28,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:28,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:28,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:29,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:32,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:33,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:33,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:33,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:37:33,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 06:37:33,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:37:33,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:33,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:37:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:37:33,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 06:37:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:33,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:33,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:33,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:37:33,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:37:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 06:37:33,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:33,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:37:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 06:37:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:33,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:33,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:34,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:34,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:37:34,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:34,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:34,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:34,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:34,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:37:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:34,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:37:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:37:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:37:34,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:37:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:34,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:34,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:37:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:37:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:34,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:37:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:37:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:37:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:34,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:34,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 06:37:34,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:34,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:34,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:37:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:34,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:34,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:37:34,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:37:34,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:34,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:34,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:34,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 52 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-25 06:37:34,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261893046] [2020-09-25 06:37:34,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:37:34,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:37:34,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345959332] [2020-09-25 06:37:34,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:37:34,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:37:34,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:37:34,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:37:34,069 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 7 states. [2020-09-25 06:37:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:37:34,166 INFO L93 Difference]: Finished difference Result 101 states and 136 transitions. [2020-09-25 06:37:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:37:34,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-25 06:37:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:37:34,171 INFO L225 Difference]: With dead ends: 101 [2020-09-25 06:37:34,171 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 06:37:34,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:37:34,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 06:37:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2020-09-25 06:37:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 06:37:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 100 transitions. [2020-09-25 06:37:34,196 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 100 transitions. Word has length 69 [2020-09-25 06:37:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:37:34,197 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 100 transitions. [2020-09-25 06:37:34,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:37:34,197 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 100 transitions. [2020-09-25 06:37:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 06:37:34,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:37:34,199 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:37:34,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:37:34,199 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:37:34,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:37:34,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 06:37:34,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:37:34,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601140454] [2020-09-25 06:37:34,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:37:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:34,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:35,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:36,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:39,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 06:37:39,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:37:39,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:37:39,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:39,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:37:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:37:39,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:37:39,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:39,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:37:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:37:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 06:37:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:37:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:37:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:37:39,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:37:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:37:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:37:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:37:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:37:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:37:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:37:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:39,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:37:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking...