/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:30:40,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:30:40,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:30:40,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:30:40,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:30:40,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:30:40,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:30:40,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:30:40,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:30:40,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:30:40,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:30:40,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:30:40,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:30:40,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:30:40,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:30:40,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:30:40,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:30:40,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:30:40,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:30:40,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:30:40,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:30:40,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:30:40,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:30:40,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:30:40,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:30:40,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:30:40,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:30:40,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:30:40,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:30:40,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:30:40,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:30:40,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:30:40,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:30:40,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:30:40,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:30:40,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:30:40,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:30:40,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:30:40,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:30:40,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:30:40,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:30:40,168 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 14:30:40,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:30:40,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:30:40,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:30:40,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:30:40,220 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:30:40,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:30:40,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:30:40,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:30:40,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:30:40,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:30:40,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:30:40,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:30:40,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:30:40,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:30:40,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:30:40,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:30:40,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:30:40,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:30:40,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:30:40,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:30:40,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:30:40,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:30:40,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:30:40,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:30:40,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:30:40,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:30:40,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:30:40,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:30:40,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:30:40,227 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:30:40,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:30:40,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:30:40,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:30:40,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:30:40,690 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:30:40,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 14:30:40,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76d4db36d/2588d48f0faa43e1b78a4fdd161a7223/FLAGe1bd005e6 [2020-09-25 14:30:41,315 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:30:41,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 14:30:41,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76d4db36d/2588d48f0faa43e1b78a4fdd161a7223/FLAGe1bd005e6 [2020-09-25 14:30:41,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76d4db36d/2588d48f0faa43e1b78a4fdd161a7223 [2020-09-25 14:30:41,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:30:41,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:30:41,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:41,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:30:41,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:30:41,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:41,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457b3941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41, skipping insertion in model container [2020-09-25 14:30:41,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:41,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:30:41,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:30:41,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:41,927 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:30:41,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:30:41,967 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:30:41,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41 WrapperNode [2020-09-25 14:30:41,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:30:41,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:30:41,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:30:41,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:30:41,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:41,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:42,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:42,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:42,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:42,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:42,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (1/1) ... [2020-09-25 14:30:42,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:30:42,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:30:42,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:30:42,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:30:42,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (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 14:30:42,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:30:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:30:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 14:30:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 14:30:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:30:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:30:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:30:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 14:30:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 14:30:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:30:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:30:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:30:42,388 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:30:42,388 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:30:42,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:42 BoogieIcfgContainer [2020-09-25 14:30:42,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:30:42,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:30:42,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:30:42,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:30:42,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:30:41" (1/3) ... [2020-09-25 14:30:42,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed74f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:30:42, skipping insertion in model container [2020-09-25 14:30:42,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:30:41" (2/3) ... [2020-09-25 14:30:42,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed74f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:30:42, skipping insertion in model container [2020-09-25 14:30:42,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:30:42" (3/3) ... [2020-09-25 14:30:42,404 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2020-09-25 14:30:42,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:30:42,455 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:30:42,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:30:42,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:30:42,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:30:42,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:30:42,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:30:42,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:30:42,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:30:42,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:30:42,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:30:42,553 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 14:30:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 14:30:42,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:42,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:42,562 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:42,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 14:30:42,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:42,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124795330] [2020-09-25 14:30:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:30:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:42,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 14:30:42,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:42,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:30:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:30:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:42,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:42,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:42,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:30:42,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:42,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:42,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:42,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:30:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:42,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:30:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:42,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:30:42,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,028 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 14:30:43,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124795330] [2020-09-25 14:30:43,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:43,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:43,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488204580] [2020-09-25 14:30:43,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:43,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:43,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:43,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:43,064 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 14:30:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:43,161 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 14:30:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:30:43,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 14:30:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:43,178 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:43,178 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:30:43,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:30:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:30:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 14:30:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:43,247 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 14:30:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:43,248 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:43,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:30:43,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:43,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:43,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:30:43,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 14:30:43,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:43,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677618757] [2020-09-25 14:30:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:30:43,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:43,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 14:30:43,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:43,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:43,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:43,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:43,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:43,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:43,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:30:43,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:43,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:43,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:43,559 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 14:30:43,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677618757] [2020-09-25 14:30:43,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:43,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:30:43,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275592830] [2020-09-25 14:30:43,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:30:43,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:43,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:30:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:30:43,564 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 14:30:43,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:43,639 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 14:30:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:30:43,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 14:30:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:43,642 INFO L225 Difference]: With dead ends: 50 [2020-09-25 14:30:43,642 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 14:30:43,643 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 14:30:43,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 14:30:43,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 14:30:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 14:30:43,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 14:30:43,654 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 14:30:43,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:43,654 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 14:30:43,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:30:43,655 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 14:30:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:30:43,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:43,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:43,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:30:43,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:43,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 14:30:43,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:43,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513120262] [2020-09-25 14:30:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:43,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 14:30:45,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:30:45,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1944 [2020-09-25 14:30:45,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:45,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:45,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:30:45,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:45,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:45,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:45,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:45,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:30:45,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 14:30:45,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:45,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:45,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:30:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:45,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:45,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:45,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:45,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:45,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:30:45,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:45,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:45,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513120262] [2020-09-25 14:30:45,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:45,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:30:45,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173047868] [2020-09-25 14:30:45,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:45,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:45,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:45,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:45,957 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 14:30:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:46,117 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 14:30:46,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:46,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:30:46,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:46,122 INFO L225 Difference]: With dead ends: 58 [2020-09-25 14:30:46,123 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 14:30:46,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:46,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 14:30:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 14:30:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:30:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 14:30:46,138 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 14:30:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:46,139 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 14:30:46,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 14:30:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:30:46,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:46,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:46,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:30:46,142 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 14:30:46,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:46,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584499930] [2020-09-25 14:30:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:30:48,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:30:48,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-09-25 14:30:48,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:48,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:48,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:30:48,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:30:48,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:48,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:48,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:30:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:30:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-09-25 14:30:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:30:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:30:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:30:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:48,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:48,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:30:48,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:30:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:48,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:48,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:48,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:30:48,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:30:48,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584499930] [2020-09-25 14:30:48,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:30:48,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:30:48,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054604126] [2020-09-25 14:30:48,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:30:48,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:48,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:30:48,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:30:48,762 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 14:30:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:48,923 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2020-09-25 14:30:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:30:48,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:30:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:48,927 INFO L225 Difference]: With dead ends: 66 [2020-09-25 14:30:48,927 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 14:30:48,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:30:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 14:30:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-09-25 14:30:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:30:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 14:30:48,951 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 35 [2020-09-25 14:30:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:48,954 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 14:30:48,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:30:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 14:30:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:30:48,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:48,959 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:48,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:30:48,963 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:48,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:48,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 14:30:48,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:48,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215800171] [2020-09-25 14:30:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:53,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:53,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:30:53,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:30:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:30:53,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:53,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:30:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:30:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:30:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:30:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:54,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:30:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:30:54,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:54,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:54,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:30:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:30:54,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:30:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:54,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:55,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 14:30:59,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:30:59,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:30:59,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:30:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:30:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:30:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:59,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:59,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 14:30:59,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:30:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:30:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:59,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:59,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:30:59,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:30:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:30:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:59,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:30:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:59,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:30:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:30:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:30:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 14:30:59,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:30:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:30:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:30:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:30:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:59,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:59,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:30:59,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:59,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:30:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:30:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:30:59,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:30:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:30:59,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:30:59,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:30:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:30:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:30:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:30:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:30:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 14:30:59,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215800171] [2020-09-25 14:30:59,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:30:59,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:30:59,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950108352] [2020-09-25 14:30:59,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:30:59,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:30:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:30:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:30:59,373 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 10 states. [2020-09-25 14:30:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:30:59,694 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2020-09-25 14:30:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:30:59,695 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 14:30:59,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:30:59,700 INFO L225 Difference]: With dead ends: 128 [2020-09-25 14:30:59,700 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 14:30:59,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:30:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 14:30:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-09-25 14:30:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 14:30:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-25 14:30:59,729 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 67 [2020-09-25 14:30:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:30:59,730 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-25 14:30:59,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:30:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-25 14:30:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 14:30:59,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:30:59,735 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:30:59,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:30:59,739 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:30:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:30:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 14:30:59,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:30:59,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694908537] [2020-09-25 14:30:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:30:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:30:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:30:59,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:01,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:04,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:31:04,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:31:04,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:31:04,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:04,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:04,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:04,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:31:04,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:31:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:04,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:04,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:04,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:04,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:04,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:04,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:04,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:04,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:31:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:31:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:09,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:31:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:09,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:09,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:09,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:31:10,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:31:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-25 14:31:10,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:10,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:31:10,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:31:10,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:31:10,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:10,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:31:10,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:31:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:10,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:31:10,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:10,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:31:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 14:31:10,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:31:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:10,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:10,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:10,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:10,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:31:10,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:10,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:10,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:10,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:10,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 14:31:10,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694908537] [2020-09-25 14:31:10,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:10,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:31:10,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358583163] [2020-09-25 14:31:10,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:31:10,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:10,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:31:10,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:31:10,564 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 9 states. [2020-09-25 14:31:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:10,780 INFO L93 Difference]: Finished difference Result 166 states and 226 transitions. [2020-09-25 14:31:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:31:10,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 14:31:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:10,783 INFO L225 Difference]: With dead ends: 166 [2020-09-25 14:31:10,784 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 14:31:10,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:31:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 14:31:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-09-25 14:31:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-25 14:31:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2020-09-25 14:31:10,799 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 68 [2020-09-25 14:31:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:10,800 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2020-09-25 14:31:10,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:31:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2020-09-25 14:31:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 14:31:10,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:10,803 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:10,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:31:10,803 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 14:31:10,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:10,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515333975] [2020-09-25 14:31:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:11,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:15,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 14:31:15,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:31:15,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:31:15,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:15,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:31:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:31:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:31:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:15,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:15,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:15,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:15,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:15,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:15,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:15,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:15,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:20,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:20,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 14:31:20,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 14:31:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:31:20,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:20,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:31:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:31:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 14:31:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:20,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:31:21,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:31:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-09-25 14:31:21,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:21,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:31:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:21,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:31:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:21,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:21,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:21,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:21,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 14:31:21,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:21,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:21,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:21,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:21,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:21,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:21,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:21,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:21,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:21,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:21,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:21,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:21,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:21,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:21,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:31:21,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:21,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:21,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:21,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:21,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:21,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:31:21,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:31:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:22,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 14:31:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:22,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:31:23,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:31:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-09-25 14:31:23,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:31:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:31:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 14:31:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:31:23,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:31:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 14:31:23,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:31:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:31:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:23,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:23,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:23,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:31:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:23,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:31:23,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:23,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:31:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:31:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:31:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:23,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:31:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:31:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 36 proven. 30 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 14:31:23,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515333975] [2020-09-25 14:31:23,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:31:23,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:31:23,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387048874] [2020-09-25 14:31:23,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:31:23,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:31:23,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:31:23,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:31:23,531 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand 11 states. [2020-09-25 14:31:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:31:23,917 INFO L93 Difference]: Finished difference Result 203 states and 296 transitions. [2020-09-25 14:31:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:31:23,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 101 [2020-09-25 14:31:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:31:23,922 INFO L225 Difference]: With dead ends: 203 [2020-09-25 14:31:23,922 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 14:31:23,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:31:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 14:31:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-09-25 14:31:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 14:31:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-09-25 14:31:23,957 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 101 [2020-09-25 14:31:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:31:23,958 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-09-25 14:31:23,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:31:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-09-25 14:31:23,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:31:23,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:31:23,963 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:31:23,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:31:23,963 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:31:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:31:23,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 14:31:23,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:31:23,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826320518] [2020-09-25 14:31:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:31:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:24,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:26,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:28,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:28,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 14:31:29,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 14:31:29,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:31:29,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:29,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:31:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:31:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 14:31:29,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:29,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:31:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:29,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:31:29,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:31:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:31:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:31:29,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:31:29,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:31:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:31:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:31:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:31:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:31:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 14:31:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:31:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:29,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:32,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:31:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking...