/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_2calls_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:07:53,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:07:53,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:07:54,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:07:54,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:07:54,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:07:54,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:07:54,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:07:54,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:07:54,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:07:54,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:07:54,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:07:54,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:07:54,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:07:54,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:07:54,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:07:54,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:07:54,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:07:54,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:07:54,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:07:54,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:07:54,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:07:54,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:07:54,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:07:54,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:07:54,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:07:54,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:07:54,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:07:54,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:07:54,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:07:54,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:07:54,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:07:54,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:07:54,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:07:54,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:07:54,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:07:54,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:07:54,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:07:54,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:07:54,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:07:54,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:07:54,118 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 11:07:54,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:07:54,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:07:54,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:07:54,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:07:54,172 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:07:54,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:07:54,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:07:54,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:07:54,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:07:54,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:07:54,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:07:54,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:07:54,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:07:54,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:07:54,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:07:54,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:07:54,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:07:54,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:07:54,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:07:54,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:07:54,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:07:54,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:54,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:07:54,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:07:54,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:07:54,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:07:54,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:07:54,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:07:54,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:07:54,179 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:07:54,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:54,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:54,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:54,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:54,631 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:54,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 11:07:54,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b467cf7/062b8039ea0b46c5b215b01207def7cc/FLAGa0774876f [2020-09-25 11:07:55,243 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:55,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 11:07:55,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b467cf7/062b8039ea0b46c5b215b01207def7cc/FLAGa0774876f [2020-09-25 11:07:55,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b467cf7/062b8039ea0b46c5b215b01207def7cc [2020-09-25 11:07:55,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:55,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:55,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:55,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:55,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:55,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:55,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55, skipping insertion in model container [2020-09-25 11:07:55,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:55,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:55,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:55,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:55,907 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:55,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:55,955 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:55,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55 WrapperNode [2020-09-25 11:07:55,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:55,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:55,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:55,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:55,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:55,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:55,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:55,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:56,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:56,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:56,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (1/1) ... [2020-09-25 11:07:56,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:56,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:56,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:56,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:56,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (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 11:07:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:56,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:56,474 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:56,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:56 BoogieIcfgContainer [2020-09-25 11:07:56,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:56,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:56,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:56,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:56,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:55" (1/3) ... [2020-09-25 11:07:56,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df82cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:56, skipping insertion in model container [2020-09-25 11:07:56,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:55" (2/3) ... [2020-09-25 11:07:56,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8df82cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:56, skipping insertion in model container [2020-09-25 11:07:56,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:56" (3/3) ... [2020-09-25 11:07:56,515 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-25 11:07:56,534 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:56,544 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:56,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:56,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:56,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:56,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:56,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:56,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:56,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:56,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:56,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:56,620 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:56,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:56,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:56,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:56,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:56,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:56,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231681490] [2020-09-25 11:07:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:56,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 11:07:56,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:56,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:56,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:56,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:56,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:56,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:56,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:56,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:56,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:56,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:56,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:07:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:56,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:56,974 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 11:07:56,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231681490] [2020-09-25 11:07:56,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:56,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:56,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857342555] [2020-09-25 11:07:56,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:56,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:57,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:57,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:57,006 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:57,131 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:57,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:57,147 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:57,148 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:57,152 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 11:07:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:57,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:57,210 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:57,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:57,211 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:57,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:57,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:57,214 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 11:07:57,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:57,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:57,216 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:57,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:57,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958545562] [2020-09-25 11:07:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:57,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 11:07:57,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:57,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:57,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 11:07:57,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:07:57,447 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 11:07:57,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958545562] [2020-09-25 11:07:57,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:57,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:57,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462295300] [2020-09-25 11:07:57,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:57,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:57,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:57,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:57,451 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:57,529 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:57,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:57,532 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:57,532 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:57,533 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 11:07:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:57,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:57,543 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:57,544 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:57,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:57,544 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:57,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:57,546 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:57,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:57,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:57,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:57,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:57,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:57,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674294889] [2020-09-25 11:07:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:58,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:58,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-09-25 11:07:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:58,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:58,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:58,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:58,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 11:07:58,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:58,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:58,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:58,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:58,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:58,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:58,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:58,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:58,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674294889] [2020-09-25 11:07:58,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:58,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:58,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657053382] [2020-09-25 11:07:58,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:58,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:58,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:58,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:58,573 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:58,765 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:58,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:58,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:58,770 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:58,770 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:58,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:58,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:58,791 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:58,792 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:58,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:58,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:58,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:58,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:58,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:58,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:58,796 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:58,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:58,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622713095] [2020-09-25 11:07:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-09-25 11:07:59,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:59,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:59,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:59,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-09-25 11:07:59,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:07:59,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:59,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:07:59,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:59,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622713095] [2020-09-25 11:07:59,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:59,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:59,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888665139] [2020-09-25 11:07:59,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:59,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:59,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:59,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:59,944 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:08:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:00,131 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 11:08:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:00,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:08:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:00,141 INFO L225 Difference]: With dead ends: 110 [2020-09-25 11:08:00,141 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:08:00,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:08:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:08:00,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:08:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:08:00,175 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 11:08:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:00,175 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:08:00,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:08:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:08:00,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:00,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:00,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:08:00,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:00,188 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:08:00,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:00,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455822187] [2020-09-25 11:08:00,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:08:05,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:05,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:05,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:05,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:08:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:05,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:05,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:05,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:05,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:08,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:08,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:08:08,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3687 [2020-09-25 11:08:08,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:08,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:08,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:08,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:08,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 11:08:09,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:09,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:09,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:09,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:09,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:09,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:09,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:09,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:08:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:08:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:08:09,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455822187] [2020-09-25 11:08:09,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:09,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:09,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687521090] [2020-09-25 11:08:09,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:09,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:09,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:09,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:09,145 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 11:08:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:09,298 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 11:08:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:09,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:08:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:09,301 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:08:09,301 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:08:09,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:08:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 11:08:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 11:08:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 11:08:09,323 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 11:08:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:09,325 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 11:08:09,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 11:08:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:08:09,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:09,334 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:09,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:08:09,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:09,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:08:09,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:09,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419268794] [2020-09-25 11:08:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:08:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:08:14,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:08:14,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:14,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:14,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:08:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:14,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:14,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:14,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:14,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:14,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:08:19,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:19,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:19,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:08:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:19,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 11:08:19,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:19,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:19,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:19,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:19,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:19,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:19,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:19,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 11:08:19,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:19,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:19,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:19,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:19,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:19,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:19,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:19,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 11:08:19,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419268794] [2020-09-25 11:08:19,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:19,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:08:19,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059803046] [2020-09-25 11:08:19,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:08:19,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:08:19,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:19,637 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 9 states. [2020-09-25 11:08:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:19,857 INFO L93 Difference]: Finished difference Result 82 states and 112 transitions. [2020-09-25 11:08:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:19,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 11:08:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:19,860 INFO L225 Difference]: With dead ends: 82 [2020-09-25 11:08:19,860 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 11:08:19,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:08:19,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 11:08:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-09-25 11:08:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 11:08:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2020-09-25 11:08:19,887 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 67 [2020-09-25 11:08:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:19,887 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2020-09-25 11:08:19,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:08:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2020-09-25 11:08:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 11:08:19,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:19,890 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:19,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:08:19,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 11:08:19,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:19,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981483316] [2020-09-25 11:08:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:08:24,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:24,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:24,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:24,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:24,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:24,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:24,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:29,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:08:29,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:29,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:29,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:29,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:08:29,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:29,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:08:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:29,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:29,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:29,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:29,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:29,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:29,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:30,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:30,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:08:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:30,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:08:30,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:30,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:30,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:08:30,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:30,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:30,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:30,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:30,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:30,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 11:08:30,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981483316] [2020-09-25 11:08:30,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:30,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:08:30,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511080207] [2020-09-25 11:08:30,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:08:30,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:30,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:08:30,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:08:30,279 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand 8 states. [2020-09-25 11:08:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:30,481 INFO L93 Difference]: Finished difference Result 112 states and 166 transitions. [2020-09-25 11:08:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:30,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-25 11:08:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:30,487 INFO L225 Difference]: With dead ends: 112 [2020-09-25 11:08:30,487 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 11:08:30,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:30,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 11:08:30,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-09-25 11:08:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 11:08:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 136 transitions. [2020-09-25 11:08:30,524 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 136 transitions. Word has length 69 [2020-09-25 11:08:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:30,525 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 136 transitions. [2020-09-25 11:08:30,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:08:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 136 transitions. [2020-09-25 11:08:30,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 11:08:30,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:30,530 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:30,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:08:30,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:30,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:30,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 11:08:30,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:30,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663147290] [2020-09-25 11:08:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:35,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 11:08:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:08:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:35,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:08:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:35,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:35,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:35,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:35,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:35,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:40,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 11:08:40,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 11:08:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:40,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:40,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:08:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:08:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:40,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:43,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:43,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3339 [2020-09-25 11:08:43,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:43,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:43,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:44,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:44,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 11:08:44,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:44,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:44,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:44,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:44,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:44,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:44,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:44,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:44,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:44,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:44,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:44,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:44,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:44,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:44,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:44,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:44,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:44,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:44,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:44,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:44,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:44,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:44,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:44,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:44,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:08:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:45,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:45,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:08:45,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1571 [2020-09-25 11:08:45,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:45,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:45,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:08:45,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:45,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:45,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:45,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:45,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 11:08:45,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:45,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:45,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:45,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:45,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:45,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:45,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:45,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:45,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:45,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:45,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:45,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:45,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:45,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:45,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:45,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:45,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:45,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 50 proven. 33 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-25 11:08:45,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663147290] [2020-09-25 11:08:45,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:45,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:08:45,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567579612] [2020-09-25 11:08:45,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:08:45,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:45,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:08:45,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:08:45,968 INFO L87 Difference]: Start difference. First operand 94 states and 136 transitions. Second operand 13 states. [2020-09-25 11:08:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:46,432 INFO L93 Difference]: Finished difference Result 209 states and 349 transitions. [2020-09-25 11:08:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:08:46,432 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2020-09-25 11:08:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:46,435 INFO L225 Difference]: With dead ends: 209 [2020-09-25 11:08:46,435 INFO L226 Difference]: Without dead ends: 121 [2020-09-25 11:08:46,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:08:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-25 11:08:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-09-25 11:08:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 11:08:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2020-09-25 11:08:46,454 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 101 [2020-09-25 11:08:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:46,454 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2020-09-25 11:08:46,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:08:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2020-09-25 11:08:46,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 11:08:46,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:46,456 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:46,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:08:46,457 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:46,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:46,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 11:08:46,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:46,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056929119] [2020-09-25 11:08:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:47,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:51,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 11:08:51,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 11:08:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:08:51,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:51,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:08:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:51,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:51,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:51,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:51,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:51,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:51,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1