/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=0.3 --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/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:13:44,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:13:44,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:13:45,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:13:45,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:13:45,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:13:45,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:13:45,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:13:45,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:13:45,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:13:45,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:13:45,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:13:45,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:13:45,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:13:45,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:13:45,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:13:45,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:13:45,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:13:45,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:13:45,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:13:45,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:13:45,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:13:45,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:13:45,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:13:45,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:13:45,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:13:45,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:13:45,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:13:45,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:13:45,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:13:45,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:13:45,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:13:45,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:13:45,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:13:45,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:13:45,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:13:45,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:13:45,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:13:45,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:13:45,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:13:45,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:13:45,121 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 12:13:45,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:13:45,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:13:45,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:13:45,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:13:45,151 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:13:45,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:13:45,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:13:45,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:13:45,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:13:45,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:13:45,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:13:45,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:13:45,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:13:45,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:13:45,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:13:45,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:13:45,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:13:45,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:13:45,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:13:45,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:13:45,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:13:45,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:45,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:13:45,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:13:45,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:13:45,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:13:45,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:13:45,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:13:45,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:13:45,156 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:13:45,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:13:45,656 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:13:45,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:13:45,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:13:45,664 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:13:45,665 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 12:13:45,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc52a2f9/7857b8b50b614610991c8de2c1c16495/FLAG12d3fad53 [2020-09-25 12:13:46,307 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:13:46,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 12:13:46,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc52a2f9/7857b8b50b614610991c8de2c1c16495/FLAG12d3fad53 [2020-09-25 12:13:46,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bc52a2f9/7857b8b50b614610991c8de2c1c16495 [2020-09-25 12:13:46,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:13:46,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:13:46,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:46,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:13:46,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:13:46,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:46,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46, skipping insertion in model container [2020-09-25 12:13:46,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:46,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:13:46,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:13:46,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:46,953 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:13:46,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:46,994 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:13:46,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46 WrapperNode [2020-09-25 12:13:46,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:46,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:13:46,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:13:46,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:13:47,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:47,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:47,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:47,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:47,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:47,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:47,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... [2020-09-25 12:13:47,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:13:47,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:13:47,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:13:47,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:13:47,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:13:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:13:47,196 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 12:13:47,197 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:13:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:13:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:13:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 12:13:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:13:47,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:13:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:13:47,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:13:47,418 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:13:47,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:47 BoogieIcfgContainer [2020-09-25 12:13:47,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:13:47,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:13:47,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:13:47,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:13:47,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:13:46" (1/3) ... [2020-09-25 12:13:47,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55be5355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:47, skipping insertion in model container [2020-09-25 12:13:47,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:46" (2/3) ... [2020-09-25 12:13:47,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55be5355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:47, skipping insertion in model container [2020-09-25 12:13:47,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:47" (3/3) ... [2020-09-25 12:13:47,438 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-09-25 12:13:47,467 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:13:47,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:13:47,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:13:47,595 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:13:47,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:13:47,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:13:47,596 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:13:47,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:13:47,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:13:47,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:13:47,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:13:47,622 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 12:13:47,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 12:13:47,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:47,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:47,634 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:47,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 12:13:47,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:47,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053654160] [2020-09-25 12:13:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:13:47,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 12:13:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:13:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:13:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:13:47,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:47,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:47,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:47,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:13:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:13:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:13:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,034 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 12:13:48,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053654160] [2020-09-25 12:13:48,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:48,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:13:48,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496745304] [2020-09-25 12:13:48,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:13:48,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:48,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:13:48,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:13:48,070 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 12:13:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:48,196 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 12:13:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:13:48,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 12:13:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:48,219 INFO L225 Difference]: With dead ends: 48 [2020-09-25 12:13:48,220 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 12:13:48,228 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 12:13:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 12:13:48,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 12:13:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 12:13:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 12:13:48,326 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 12:13:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:48,327 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 12:13:48,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:13:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 12:13:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 12:13:48,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:48,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:48,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:13:48,333 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:48,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 12:13:48,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:48,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346315111] [2020-09-25 12:13:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 12:13:48,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 12:13:48,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:13:48,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:13:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:48,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:48,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:13:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:48,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:13:48,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:48,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:48,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,615 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 12:13:48,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346315111] [2020-09-25 12:13:48,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:48,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:13:48,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862016038] [2020-09-25 12:13:48,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:13:48,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:48,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:13:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:13:48,620 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 12:13:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:48,687 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 12:13:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:13:48,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 12:13:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:48,690 INFO L225 Difference]: With dead ends: 38 [2020-09-25 12:13:48,690 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 12:13:48,691 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 12:13:48,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 12:13:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 12:13:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 12:13:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 12:13:48,700 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 12:13:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:48,700 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 12:13:48,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:13:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 12:13:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:13:48,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:48,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:48,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:13:48,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:48,704 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 12:13:48,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:48,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778633230] [2020-09-25 12:13:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:13:49,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:13:49,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-09-25 12:13:49,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:13:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:13:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:49,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:49,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:13:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:13:49,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 12:13:49,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:13:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:13:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:13:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:13:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:13:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:49,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:49,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:13:49,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:49,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:13:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 12:13:49,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778633230] [2020-09-25 12:13:49,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:49,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:13:49,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653170976] [2020-09-25 12:13:49,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:13:49,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:49,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:13:49,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:49,548 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 12:13:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:49,677 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 12:13:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:13:49,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:13:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:49,680 INFO L225 Difference]: With dead ends: 68 [2020-09-25 12:13:49,680 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:13:49,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:13:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:13:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 12:13:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 12:13:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 12:13:49,692 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 12:13:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:49,693 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 12:13:49,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:13:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 12:13:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 12:13:49,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:49,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:49,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:13:49,696 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:49,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:49,697 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 12:13:49,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:49,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129780019] [2020-09-25 12:13:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:13:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 12:13:50,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:13:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:13:50,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:50,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:50,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:13:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:13:50,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:50,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 12:13:50,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:13:50,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:13:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:50,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:50,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:13:50,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:13:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:13:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:50,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:13:50,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:13:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 12:13:50,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129780019] [2020-09-25 12:13:50,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:50,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:13:50,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752631120] [2020-09-25 12:13:50,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:13:50,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:50,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:13:50,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:50,497 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 12:13:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:50,639 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-09-25 12:13:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:13:50,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 12:13:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:50,642 INFO L225 Difference]: With dead ends: 56 [2020-09-25 12:13:50,642 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 12:13:50,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:13:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 12:13:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-09-25 12:13:50,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 12:13:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-09-25 12:13:50,654 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 36 [2020-09-25 12:13:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:50,654 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-09-25 12:13:50,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:13:50,655 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-09-25 12:13:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 12:13:50,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:50,658 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:50,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:13:50,659 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1801616585, now seen corresponding path program 2 times [2020-09-25 12:13:50,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:50,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834898783] [2020-09-25 12:13:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 12:13:55,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:13:55,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:13:55,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:13:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:13:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:13:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:55,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:55,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:13:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:56,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:00,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 12:14:00,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:14:00,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:14:00,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:00,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:14:00,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:14:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:14:00,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:14:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:00,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:00,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 12:14:00,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:00,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:14:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:00,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:00,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:14:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:00,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:00,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:00,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:00,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:14:00,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:00,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:00,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:14:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:00,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:14:02,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:14:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1930 [2020-09-25 12:14:02,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:14:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:03,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 12:14:03,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:03,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:14:03,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:03,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:03,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:03,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:03,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:03,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:14:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:03,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:14:03,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:03,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:03,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,179 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 12:14:03,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834898783] [2020-09-25 12:14:03,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:03,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:14:03,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287736008] [2020-09-25 12:14:03,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:14:03,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:03,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:14:03,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:14:03,184 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 9 states. [2020-09-25 12:14:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:03,516 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-09-25 12:14:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:14:03,517 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 12:14:03,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:03,520 INFO L225 Difference]: With dead ends: 79 [2020-09-25 12:14:03,520 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 12:14:03,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:14:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 12:14:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 12:14:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 12:14:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2020-09-25 12:14:03,543 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 87 [2020-09-25 12:14:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:03,545 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2020-09-25 12:14:03,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:14:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2020-09-25 12:14:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 12:14:03,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:03,548 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:03,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:14:03,550 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:03,551 INFO L82 PathProgramCache]: Analyzing trace with hash 4423077, now seen corresponding path program 3 times [2020-09-25 12:14:03,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:03,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383710434] [2020-09-25 12:14:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:08,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 12:14:08,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:14:08,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:14:08,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:08,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:14:08,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:14:08,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:14:08,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:08,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:08,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:08,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:08,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:08,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:08,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:14:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:13,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:14:13,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 12:14:13,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:13,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:13,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:14:13,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:13,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:13,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:14:13,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:13,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:13,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:13,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:13,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:13,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:13,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:14:13,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:13,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:13,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:13,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:14:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:14:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:14:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2508 [2020-09-25 12:14:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:14:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:16,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:14:16,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:14:16,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:14:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:16,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:16,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:16,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:16,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:16,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:14:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:16,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:14:16,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:16,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 61 proven. 64 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-25 12:14:16,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383710434] [2020-09-25 12:14:16,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:16,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:14:16,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469734974] [2020-09-25 12:14:16,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:14:16,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:16,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:14:16,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:14:16,548 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 9 states. [2020-09-25 12:14:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:16,785 INFO L93 Difference]: Finished difference Result 100 states and 136 transitions. [2020-09-25 12:14:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:14:16,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-25 12:14:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:16,789 INFO L225 Difference]: With dead ends: 100 [2020-09-25 12:14:16,789 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 12:14:16,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:14:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 12:14:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2020-09-25 12:14:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 12:14:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-09-25 12:14:16,801 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 89 [2020-09-25 12:14:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:16,802 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-09-25 12:14:16,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:14:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-09-25 12:14:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 12:14:16,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:16,804 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:16,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:14:16,805 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:16,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:16,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1419436827, now seen corresponding path program 1 times [2020-09-25 12:14:16,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:16,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549965680] [2020-09-25 12:14:16,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:18,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:18,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 12:14:21,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:14:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:14:21,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:14:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:14:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:14:21,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:21,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:21,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:21,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:21,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:21,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:21,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:14:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:23,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:23,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:23,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:26,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:26,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 12:14:26,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:14:26,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:14:26,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:26,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:14:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:14:26,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:14:26,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:26,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:26,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:26,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:14:26,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 12:14:26,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:26,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:14:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:27,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:27,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:27,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:14:27,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:27,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:27,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:27,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:27,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:27,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:14:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:27,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 12:14:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:14:32,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 12:14:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:32,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:14:32,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:32,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 12:14:32,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:14:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:32,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:32,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:32,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:32,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:32,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:32,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 12:14:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:32,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:14:32,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:32,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 58 proven. 81 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 12:14:32,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549965680] [2020-09-25 12:14:32,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:32,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:14:32,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562384838] [2020-09-25 12:14:32,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:14:32,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:32,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:14:32,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:14:32,294 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 10 states. [2020-09-25 12:14:32,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:32,604 INFO L93 Difference]: Finished difference Result 109 states and 140 transitions. [2020-09-25 12:14:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:14:32,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-09-25 12:14:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:32,607 INFO L225 Difference]: With dead ends: 109 [2020-09-25 12:14:32,607 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 12:14:32,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:14:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 12:14:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2020-09-25 12:14:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 12:14:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 12:14:32,617 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 91 [2020-09-25 12:14:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:32,618 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 12:14:32,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:14:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 12:14:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 12:14:32,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:32,620 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:32,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:14:32,620 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:32,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 4 times [2020-09-25 12:14:32,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:32,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060721089] [2020-09-25 12:14:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:33,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 12:14:37,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 12:14:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:14:37,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:37,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 12:14:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:14:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:37,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:37,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:37,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:37,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:14:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:40,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking...