/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:07:20,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:07:20,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:07:20,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:07:20,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:07:20,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:07:20,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:07:20,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:07:20,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:07:21,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:07:21,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:07:21,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:07:21,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:07:21,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:07:21,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:07:21,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:07:21,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:07:21,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:07:21,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:07:21,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:07:21,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:07:21,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:07:21,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:07:21,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:07:21,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:07:21,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:07:21,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:07:21,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:07:21,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:07:21,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:07:21,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:07:21,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:07:21,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:07:21,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:07:21,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:07:21,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:07:21,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:07:21,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:07:21,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:07:21,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:07:21,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:07:21,051 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 [2020-10-13 08:07:21,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:07:21,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:07:21,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:07:21,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:07:21,095 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:07:21,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:07:21,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:07:21,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:07:21,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:07:21,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:07:21,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:07:21,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:07:21,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:07:21,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:07:21,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:07:21,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:07:21,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:07:21,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:07:21,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:07:21,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:07:21,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:07:21,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:07:21,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:07:21,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:07:21,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:07:21,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:07:21,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:07:21,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:07:21,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:07:21,101 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:07:21,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:07:21,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:07:21,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:07:21,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:07:21,435 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:07:21,435 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22.c [2020-10-13 08:07:21,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2800fbc1c/7c981e81fb314944909c8aba7fa7b479/FLAG1724241f2 [2020-10-13 08:07:22,176 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:07:22,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label22.c [2020-10-13 08:07:22,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2800fbc1c/7c981e81fb314944909c8aba7fa7b479/FLAG1724241f2 [2020-10-13 08:07:22,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2800fbc1c/7c981e81fb314944909c8aba7fa7b479 [2020-10-13 08:07:22,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:07:22,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:07:22,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:07:22,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:07:22,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:07:22,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:22" (1/1) ... [2020-10-13 08:07:22,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565983c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:22, skipping insertion in model container [2020-10-13 08:07:22,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:07:22" (1/1) ... [2020-10-13 08:07:22,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:07:22,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:07:23,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:07:23,175 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:07:23,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:07:23,418 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:07:23,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23 WrapperNode [2020-10-13 08:07:23,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:07:23,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:07:23,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:07:23,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:07:23,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (1/1) ... [2020-10-13 08:07:23,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (1/1) ... [2020-10-13 08:07:23,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (1/1) ... [2020-10-13 08:07:23,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (1/1) ... [2020-10-13 08:07:23,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (1/1) ... [2020-10-13 08:07:23,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (1/1) ... [2020-10-13 08:07:23,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (1/1) ... [2020-10-13 08:07:23,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:07:23,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:07:23,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:07:23,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:07:23,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (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 [2020-10-13 08:07:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:07:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:07:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:07:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:07:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:07:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:07:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:07:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:07:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:07:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:07:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:07:25,428 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:07:25,429 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:07:25,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:25 BoogieIcfgContainer [2020-10-13 08:07:25,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:07:25,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:07:25,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:07:25,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:07:25,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:07:22" (1/3) ... [2020-10-13 08:07:25,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ea86ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:25, skipping insertion in model container [2020-10-13 08:07:25,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:07:23" (2/3) ... [2020-10-13 08:07:25,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ea86ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:07:25, skipping insertion in model container [2020-10-13 08:07:25,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:07:25" (3/3) ... [2020-10-13 08:07:25,449 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label22.c [2020-10-13 08:07:25,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:07:25,496 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:07:25,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:07:25,560 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:07:25,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:07:25,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:07:25,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:07:25,563 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:07:25,563 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:07:25,563 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:07:25,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:07:25,610 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:07:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 08:07:25,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:25,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:25,630 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:25,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:25,637 INFO L82 PathProgramCache]: Analyzing trace with hash 237032882, now seen corresponding path program 1 times [2020-10-13 08:07:25,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:25,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739904365] [2020-10-13 08:07:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:26,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 08:07:26,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-13 08:07:26,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:26,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:07:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:07:26,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 08:07:26,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:07:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:26,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:26,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:26,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:26,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:07:26,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:07:26,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:26,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739904365] [2020-10-13 08:07:26,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:07:26,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:07:26,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808329604] [2020-10-13 08:07:26,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:07:26,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:26,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:07:26,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:07:26,520 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:07:28,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:28,761 INFO L93 Difference]: Finished difference Result 795 states and 1396 transitions. [2020-10-13 08:07:28,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:28,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-13 08:07:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:28,800 INFO L225 Difference]: With dead ends: 795 [2020-10-13 08:07:28,800 INFO L226 Difference]: Without dead ends: 439 [2020-10-13 08:07:28,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-13 08:07:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2020-10-13 08:07:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-10-13 08:07:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 626 transitions. [2020-10-13 08:07:28,894 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 626 transitions. Word has length 61 [2020-10-13 08:07:28,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:28,895 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 626 transitions. [2020-10-13 08:07:28,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:07:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 626 transitions. [2020-10-13 08:07:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 08:07:28,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:28,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:28,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:07:28,904 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1315997458, now seen corresponding path program 1 times [2020-10-13 08:07:28,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:28,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732141622] [2020-10-13 08:07:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:29,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:30,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:30,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 08:07:30,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:30,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-10-13 08:07:30,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:30,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 08:07:30,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:07:30,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:30,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:30,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:30,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:30,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:30,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:30,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:30,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:30,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:07:30,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 08:07:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 08:07:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:30,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732141622] [2020-10-13 08:07:30,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:30,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:07:30,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247407811] [2020-10-13 08:07:30,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:07:30,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:30,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:07:30,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:30,531 INFO L87 Difference]: Start difference. First operand 427 states and 626 transitions. Second operand 6 states. [2020-10-13 08:07:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:33,631 INFO L93 Difference]: Finished difference Result 1252 states and 1926 transitions. [2020-10-13 08:07:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:07:33,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-13 08:07:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:33,644 INFO L225 Difference]: With dead ends: 1252 [2020-10-13 08:07:33,644 INFO L226 Difference]: Without dead ends: 831 [2020-10-13 08:07:33,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:07:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2020-10-13 08:07:33,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 813. [2020-10-13 08:07:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-10-13 08:07:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1189 transitions. [2020-10-13 08:07:33,729 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1189 transitions. Word has length 131 [2020-10-13 08:07:33,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:33,733 INFO L479 AbstractCegarLoop]: Abstraction has 813 states and 1189 transitions. [2020-10-13 08:07:33,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:07:33,733 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1189 transitions. [2020-10-13 08:07:33,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 08:07:33,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:33,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:33,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:07:33,750 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:33,750 INFO L82 PathProgramCache]: Analyzing trace with hash -804898139, now seen corresponding path program 1 times [2020-10-13 08:07:33,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:33,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086541562] [2020-10-13 08:07:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:33,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:34,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:34,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:07:34,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:34,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1148 [2020-10-13 08:07:34,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:07:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:07:34,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:35,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:35,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:35,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:35,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:07:35,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:35,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:35,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:07:35,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:35,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:07:35,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:07:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:35,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086541562] [2020-10-13 08:07:35,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:35,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:35,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998696818] [2020-10-13 08:07:35,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:35,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:35,244 INFO L87 Difference]: Start difference. First operand 813 states and 1189 transitions. Second operand 5 states. [2020-10-13 08:07:37,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:37,770 INFO L93 Difference]: Finished difference Result 2403 states and 3585 transitions. [2020-10-13 08:07:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:37,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 08:07:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:37,781 INFO L225 Difference]: With dead ends: 2403 [2020-10-13 08:07:37,782 INFO L226 Difference]: Without dead ends: 1596 [2020-10-13 08:07:37,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:37,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2020-10-13 08:07:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1588. [2020-10-13 08:07:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-10-13 08:07:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2257 transitions. [2020-10-13 08:07:37,840 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2257 transitions. Word has length 136 [2020-10-13 08:07:37,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:37,840 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 2257 transitions. [2020-10-13 08:07:37,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:37,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2257 transitions. [2020-10-13 08:07:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 08:07:37,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:37,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:37,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:07:37,844 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1673989835, now seen corresponding path program 1 times [2020-10-13 08:07:37,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:37,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242048758] [2020-10-13 08:07:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:38,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:38,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:38,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:07:38,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:38,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-13 08:07:38,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 08:07:38,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:07:38,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:39,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:39,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:39,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:39,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:07:39,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:39,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:39,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:39,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:39,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 08:07:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:07:39,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:39,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 08:07:39,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:39,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242048758] [2020-10-13 08:07:39,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:39,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:39,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765659055] [2020-10-13 08:07:39,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:39,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:39,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:39,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:39,291 INFO L87 Difference]: Start difference. First operand 1588 states and 2257 transitions. Second operand 5 states. [2020-10-13 08:07:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:41,846 INFO L93 Difference]: Finished difference Result 4695 states and 6866 transitions. [2020-10-13 08:07:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:41,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-13 08:07:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:41,873 INFO L225 Difference]: With dead ends: 4695 [2020-10-13 08:07:41,873 INFO L226 Difference]: Without dead ends: 3113 [2020-10-13 08:07:41,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-10-13 08:07:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 3107. [2020-10-13 08:07:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-13 08:07:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4226 transitions. [2020-10-13 08:07:42,029 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4226 transitions. Word has length 144 [2020-10-13 08:07:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:42,029 INFO L479 AbstractCegarLoop]: Abstraction has 3107 states and 4226 transitions. [2020-10-13 08:07:42,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4226 transitions. [2020-10-13 08:07:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 08:07:42,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:42,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:42,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:07:42,035 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash 857098936, now seen corresponding path program 1 times [2020-10-13 08:07:42,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:42,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641775337] [2020-10-13 08:07:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-13 08:07:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:07:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-13 08:07:43,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:07:43,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:07:43,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:43,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:43,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:43,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:43,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:43,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:43,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:43,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:07:43,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:43,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:07:43,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:43,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:07:43,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:43,498 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:43,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641775337] [2020-10-13 08:07:43,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:43,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:07:43,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958644003] [2020-10-13 08:07:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:07:43,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:43,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:07:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:07:43,501 INFO L87 Difference]: Start difference. First operand 3107 states and 4226 transitions. Second operand 5 states. [2020-10-13 08:07:45,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:45,612 INFO L93 Difference]: Finished difference Result 7735 states and 10881 transitions. [2020-10-13 08:07:45,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:07:45,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-13 08:07:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:45,640 INFO L225 Difference]: With dead ends: 7735 [2020-10-13 08:07:45,640 INFO L226 Difference]: Without dead ends: 4634 [2020-10-13 08:07:45,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2020-10-13 08:07:45,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4252. [2020-10-13 08:07:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4252 states. [2020-10-13 08:07:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 5675 transitions. [2020-10-13 08:07:45,856 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 5675 transitions. Word has length 177 [2020-10-13 08:07:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:45,856 INFO L479 AbstractCegarLoop]: Abstraction has 4252 states and 5675 transitions. [2020-10-13 08:07:45,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:07:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 5675 transitions. [2020-10-13 08:07:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 08:07:45,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:45,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:45,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:07:45,864 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1230077083, now seen corresponding path program 1 times [2020-10-13 08:07:45,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:45,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103994869] [2020-10-13 08:07:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:46,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:50,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:50,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 08:07:50,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:50,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4622 [2020-10-13 08:07:50,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:50,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:07:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-13 08:07:50,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 08:07:50,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:50,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:50,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:50,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:50,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:07:50,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:50,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:50,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:50,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:50,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:50,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:07:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:07:50,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 08:07:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:50,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:50,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:07:50,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 08:07:50,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:07:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 08:07:50,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103994869] [2020-10-13 08:07:50,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:50,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:07:50,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956352806] [2020-10-13 08:07:50,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:07:50,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:50,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:07:50,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:07:50,939 INFO L87 Difference]: Start difference. First operand 4252 states and 5675 transitions. Second operand 6 states. [2020-10-13 08:07:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:07:54,549 INFO L93 Difference]: Finished difference Result 12711 states and 17613 transitions. [2020-10-13 08:07:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:07:54,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2020-10-13 08:07:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:07:54,593 INFO L225 Difference]: With dead ends: 12711 [2020-10-13 08:07:54,593 INFO L226 Difference]: Without dead ends: 8465 [2020-10-13 08:07:54,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:07:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8465 states. [2020-10-13 08:07:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8465 to 7891. [2020-10-13 08:07:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7891 states. [2020-10-13 08:07:54,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 10651 transitions. [2020-10-13 08:07:54,875 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 10651 transitions. Word has length 224 [2020-10-13 08:07:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:07:54,876 INFO L479 AbstractCegarLoop]: Abstraction has 7891 states and 10651 transitions. [2020-10-13 08:07:54,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:07:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 10651 transitions. [2020-10-13 08:07:54,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-13 08:07:54,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:07:54,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:07:54,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:07:54,885 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:07:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:07:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1088116778, now seen corresponding path program 1 times [2020-10-13 08:07:54,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:07:54,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718146224] [2020-10-13 08:07:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:07:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:55,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:58,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:58,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 08:07:58,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:07:58,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3083 [2020-10-13 08:07:58,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:07:58,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-13 08:07:58,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:07:58,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:58,455 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 23 [2020-10-13 08:07:58,687 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-10-13 08:07:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:07:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:58,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:07:58,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:07:58,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:07:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:07:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:07:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:07:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:07:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:07:59,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:07:59,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:07:59,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:07:59,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-13 08:07:59,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:07:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:07:59,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:07:59,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 08:07:59,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:07:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:07:59,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718146224] [2020-10-13 08:07:59,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:07:59,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:07:59,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852246163] [2020-10-13 08:07:59,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:07:59,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:07:59,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:07:59,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:07:59,235 INFO L87 Difference]: Start difference. First operand 7891 states and 10651 transitions. Second operand 8 states. [2020-10-13 08:08:01,125 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-13 08:08:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:01,692 INFO L93 Difference]: Finished difference Result 15836 states and 21411 transitions. [2020-10-13 08:08:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:08:01,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2020-10-13 08:08:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:01,742 INFO L225 Difference]: With dead ends: 15836 [2020-10-13 08:08:01,742 INFO L226 Difference]: Without dead ends: 7897 [2020-10-13 08:08:01,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7897 states. [2020-10-13 08:08:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7897 to 7891. [2020-10-13 08:08:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7891 states. [2020-10-13 08:08:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 10638 transitions. [2020-10-13 08:08:02,074 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 10638 transitions. Word has length 227 [2020-10-13 08:08:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:02,074 INFO L479 AbstractCegarLoop]: Abstraction has 7891 states and 10638 transitions. [2020-10-13 08:08:02,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:08:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 10638 transitions. [2020-10-13 08:08:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-13 08:08:02,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:02,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:02,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:08:02,098 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:02,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:02,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1165349394, now seen corresponding path program 1 times [2020-10-13 08:08:02,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:02,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947187328] [2020-10-13 08:08:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:02,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:05,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:05,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 08:08:05,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3044 [2020-10-13 08:08:05,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:08:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:08:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 08:08:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:05,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:05,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:05,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:05,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:05,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:08:05,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:08:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:05,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:05,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:05,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:08:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:08:05,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:08:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 08:08:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:05,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:05,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:05,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:08:05,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:05,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-13 08:08:05,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:05,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:08:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 108 proven. 83 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:08:05,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947187328] [2020-10-13 08:08:05,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:05,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:05,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126218850] [2020-10-13 08:08:05,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:05,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:05,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:05,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:05,922 INFO L87 Difference]: Start difference. First operand 7891 states and 10638 transitions. Second operand 7 states. [2020-10-13 08:08:08,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:08,950 INFO L93 Difference]: Finished difference Result 18736 states and 25941 transitions. [2020-10-13 08:08:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:08,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 328 [2020-10-13 08:08:08,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:08,994 INFO L225 Difference]: With dead ends: 18736 [2020-10-13 08:08:08,994 INFO L226 Difference]: Without dead ends: 10851 [2020-10-13 08:08:09,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-10-13 08:08:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10273. [2020-10-13 08:08:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10273 states. [2020-10-13 08:08:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10273 states to 10273 states and 13681 transitions. [2020-10-13 08:08:09,278 INFO L78 Accepts]: Start accepts. Automaton has 10273 states and 13681 transitions. Word has length 328 [2020-10-13 08:08:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:09,279 INFO L479 AbstractCegarLoop]: Abstraction has 10273 states and 13681 transitions. [2020-10-13 08:08:09,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 10273 states and 13681 transitions. [2020-10-13 08:08:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-13 08:08:09,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:09,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:09,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:08:09,312 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2143327654, now seen corresponding path program 1 times [2020-10-13 08:08:09,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:09,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800043823] [2020-10-13 08:08:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:09,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:10,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:10,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-13 08:08:10,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 574 [2020-10-13 08:08:10,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:08:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-13 08:08:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:10,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:10,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:10,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:10,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:10,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:10,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:08:10,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 08:08:10,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:08:10,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:10,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:08:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:11,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:11,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:08:11,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:11,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-10-13 08:08:11,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:11,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:08:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:08:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:08:11,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800043823] [2020-10-13 08:08:11,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:11,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:11,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123404237] [2020-10-13 08:08:11,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:11,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:11,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:11,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:11,355 INFO L87 Difference]: Start difference. First operand 10273 states and 13681 transitions. Second operand 7 states. [2020-10-13 08:08:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:14,003 INFO L93 Difference]: Finished difference Result 23991 states and 32760 transitions. [2020-10-13 08:08:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:14,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-13 08:08:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:14,052 INFO L225 Difference]: With dead ends: 23991 [2020-10-13 08:08:14,053 INFO L226 Difference]: Without dead ends: 13912 [2020-10-13 08:08:14,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13912 states. [2020-10-13 08:08:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13912 to 13897. [2020-10-13 08:08:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13897 states. [2020-10-13 08:08:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13897 states to 13897 states and 18745 transitions. [2020-10-13 08:08:14,413 INFO L78 Accepts]: Start accepts. Automaton has 13897 states and 18745 transitions. Word has length 371 [2020-10-13 08:08:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:14,414 INFO L479 AbstractCegarLoop]: Abstraction has 13897 states and 18745 transitions. [2020-10-13 08:08:14,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:14,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13897 states and 18745 transitions. [2020-10-13 08:08:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-13 08:08:14,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:14,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:14,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:08:14,457 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:14,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1264520300, now seen corresponding path program 1 times [2020-10-13 08:08:14,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:14,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302237661] [2020-10-13 08:08:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:14,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:14,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:14,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:15,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:19,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:19,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-10-13 08:08:19,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:08:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 08:08:19,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 08:08:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:08:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:19,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:19,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:19,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:19,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:19,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:19,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:19,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:19,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:19,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:19,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:19,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:19,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:19,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:08:19,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:19,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:08:19,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:19,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:19,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:08:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:19,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:19,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:08:19,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:19,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:08:19,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:08:19,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-13 08:08:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:20,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:20,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:20,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:08:20,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:20,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-13 08:08:20,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:20,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:08:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 08:08:21,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302237661] [2020-10-13 08:08:21,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:21,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:21,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293053806] [2020-10-13 08:08:21,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:21,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:21,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:21,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:21,137 INFO L87 Difference]: Start difference. First operand 13897 states and 18745 transitions. Second operand 7 states. [2020-10-13 08:08:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:23,112 INFO L93 Difference]: Finished difference Result 27635 states and 37453 transitions. [2020-10-13 08:08:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:08:23,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-13 08:08:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:23,157 INFO L225 Difference]: With dead ends: 27635 [2020-10-13 08:08:23,158 INFO L226 Difference]: Without dead ends: 13911 [2020-10-13 08:08:23,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:08:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13911 states. [2020-10-13 08:08:23,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13911 to 13901. [2020-10-13 08:08:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13901 states. [2020-10-13 08:08:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13901 states to 13901 states and 18792 transitions. [2020-10-13 08:08:23,476 INFO L78 Accepts]: Start accepts. Automaton has 13901 states and 18792 transitions. Word has length 428 [2020-10-13 08:08:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:23,477 INFO L479 AbstractCegarLoop]: Abstraction has 13901 states and 18792 transitions. [2020-10-13 08:08:23,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 13901 states and 18792 transitions. [2020-10-13 08:08:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-13 08:08:23,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:23,521 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:23,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:08:23,521 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:23,522 INFO L82 PathProgramCache]: Analyzing trace with hash -528153175, now seen corresponding path program 1 times [2020-10-13 08:08:23,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:23,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003839265] [2020-10-13 08:08:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-13 08:08:28,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:08:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 08:08:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:08:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-13 08:08:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 08:08:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:28,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:28,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:28,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:08:28,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:08:28,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:28,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:08:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:28,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:08:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:08:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:08:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 08:08:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:29,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:30,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:30,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:08:30,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-13 08:08:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:08:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:30,422 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:08:30,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003839265] [2020-10-13 08:08:30,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:30,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:30,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522418039] [2020-10-13 08:08:30,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:30,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:30,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:30,425 INFO L87 Difference]: Start difference. First operand 13901 states and 18792 transitions. Second operand 7 states. [2020-10-13 08:08:33,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:33,637 INFO L93 Difference]: Finished difference Result 28272 states and 38865 transitions. [2020-10-13 08:08:33,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:08:33,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-13 08:08:33,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:33,678 INFO L225 Difference]: With dead ends: 28272 [2020-10-13 08:08:33,679 INFO L226 Difference]: Without dead ends: 13993 [2020-10-13 08:08:33,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:08:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13993 states. [2020-10-13 08:08:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13993 to 13933. [2020-10-13 08:08:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13933 states. [2020-10-13 08:08:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13933 states to 13933 states and 18838 transitions. [2020-10-13 08:08:33,987 INFO L78 Accepts]: Start accepts. Automaton has 13933 states and 18838 transitions. Word has length 429 [2020-10-13 08:08:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:33,988 INFO L479 AbstractCegarLoop]: Abstraction has 13933 states and 18838 transitions. [2020-10-13 08:08:33,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 13933 states and 18838 transitions. [2020-10-13 08:08:34,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-13 08:08:34,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:34,025 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:34,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:08:34,026 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:34,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:34,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1490630008, now seen corresponding path program 1 times [2020-10-13 08:08:34,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:34,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336029930] [2020-10-13 08:08:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:34,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-13 08:08:37,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:08:37,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3262 [2020-10-13 08:08:37,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-13 08:08:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:08:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:37,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:08:37,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:08:37,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:37,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:08:37,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:08:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:08:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:08:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:08:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-13 08:08:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-13 08:08:38,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:08:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:08:39,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336029930] [2020-10-13 08:08:39,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:39,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:39,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353731440] [2020-10-13 08:08:39,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:39,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:39,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:39,414 INFO L87 Difference]: Start difference. First operand 13933 states and 18838 transitions. Second operand 7 states. [2020-10-13 08:08:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:41,708 INFO L93 Difference]: Finished difference Result 27703 states and 37593 transitions. [2020-10-13 08:08:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:08:41,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 430 [2020-10-13 08:08:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:41,750 INFO L225 Difference]: With dead ends: 27703 [2020-10-13 08:08:41,750 INFO L226 Difference]: Without dead ends: 13955 [2020-10-13 08:08:41,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:08:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13955 states. [2020-10-13 08:08:42,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13955 to 13931. [2020-10-13 08:08:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13931 states. [2020-10-13 08:08:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13931 states to 13931 states and 18726 transitions. [2020-10-13 08:08:42,063 INFO L78 Accepts]: Start accepts. Automaton has 13931 states and 18726 transitions. Word has length 430 [2020-10-13 08:08:42,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:42,064 INFO L479 AbstractCegarLoop]: Abstraction has 13931 states and 18726 transitions. [2020-10-13 08:08:42,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:42,064 INFO L276 IsEmpty]: Start isEmpty. Operand 13931 states and 18726 transitions. [2020-10-13 08:08:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-13 08:08:42,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:42,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:42,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:08:42,103 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:42,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2027980524, now seen corresponding path program 1 times [2020-10-13 08:08:42,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:42,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978250325] [2020-10-13 08:08:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:42,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:42,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:45,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-13 08:08:45,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:08:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3225 [2020-10-13 08:08:45,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:08:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:08:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:45,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:45,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:45,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:45,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:45,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:08:45,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:45,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:45,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:45,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:08:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 08:08:45,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:08:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:45,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:45,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:08:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:45,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:08:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:45,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:46,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:08:46,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:08:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-13 08:08:46,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:46,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:08:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-13 08:08:46,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978250325] [2020-10-13 08:08:46,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:46,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:08:46,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796806446] [2020-10-13 08:08:46,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:08:46,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:46,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:08:46,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:08:46,943 INFO L87 Difference]: Start difference. First operand 13931 states and 18726 transitions. Second operand 6 states. [2020-10-13 08:08:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:49,041 INFO L93 Difference]: Finished difference Result 27697 states and 37347 transitions. [2020-10-13 08:08:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:08:49,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 440 [2020-10-13 08:08:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:49,080 INFO L225 Difference]: With dead ends: 27697 [2020-10-13 08:08:49,080 INFO L226 Difference]: Without dead ends: 13945 [2020-10-13 08:08:49,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:08:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2020-10-13 08:08:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 13929. [2020-10-13 08:08:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13929 states. [2020-10-13 08:08:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13929 states to 13929 states and 18711 transitions. [2020-10-13 08:08:49,354 INFO L78 Accepts]: Start accepts. Automaton has 13929 states and 18711 transitions. Word has length 440 [2020-10-13 08:08:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:49,354 INFO L479 AbstractCegarLoop]: Abstraction has 13929 states and 18711 transitions. [2020-10-13 08:08:49,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:08:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 13929 states and 18711 transitions. [2020-10-13 08:08:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-10-13 08:08:49,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:49,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:49,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:08:49,377 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1161789012, now seen corresponding path program 1 times [2020-10-13 08:08:49,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:49,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320938030] [2020-10-13 08:08:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:51,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-13 08:08:54,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:08:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-13 08:08:54,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:08:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:08:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:08:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:08:54,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:08:54,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:54,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:54,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:08:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:08:54,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:08:54,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:08:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:08:54,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:08:54,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:54,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:08:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:08:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 08:08:54,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:08:54,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:08:54,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:08:54,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:08:55,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-13 08:08:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:55,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:08:55,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:08:55,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:08:55,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 08:08:55,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:08:55,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:08:55,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:08:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:08:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:08:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 257 proven. 93 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 08:08:55,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320938030] [2020-10-13 08:08:55,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:08:55,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:08:55,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745693577] [2020-10-13 08:08:55,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:08:55,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:08:55,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:08:55,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:08:55,335 INFO L87 Difference]: Start difference. First operand 13929 states and 18711 transitions. Second operand 7 states. [2020-10-13 08:08:59,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:08:59,137 INFO L93 Difference]: Finished difference Result 29394 states and 39387 transitions. [2020-10-13 08:08:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:08:59,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-10-13 08:08:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:08:59,183 INFO L225 Difference]: With dead ends: 29394 [2020-10-13 08:08:59,183 INFO L226 Difference]: Without dead ends: 15659 [2020-10-13 08:08:59,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:08:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15659 states. [2020-10-13 08:08:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15659 to 14894. [2020-10-13 08:08:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14894 states. [2020-10-13 08:08:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14894 states to 14894 states and 19593 transitions. [2020-10-13 08:08:59,477 INFO L78 Accepts]: Start accepts. Automaton has 14894 states and 19593 transitions. Word has length 460 [2020-10-13 08:08:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:08:59,478 INFO L479 AbstractCegarLoop]: Abstraction has 14894 states and 19593 transitions. [2020-10-13 08:08:59,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:08:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 14894 states and 19593 transitions. [2020-10-13 08:08:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-13 08:08:59,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:08:59,498 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:08:59,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:08:59,498 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:08:59,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:08:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash 886263383, now seen corresponding path program 1 times [2020-10-13 08:08:59,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:08:59,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579350385] [2020-10-13 08:08:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:08:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:08:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:08:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:09:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:00,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:00,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:09:00,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:09:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:00,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 08:09:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:09:00,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:00,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 08:09:00,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:00,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 08:09:00,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:00,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 08:09:00,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:00,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-13 08:09:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:00,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:01,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:01,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:01,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:01,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-13 08:09:01,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:09:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 381 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:09:01,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579350385] [2020-10-13 08:09:01,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:01,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:01,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764608380] [2020-10-13 08:09:01,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:01,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:01,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:01,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:01,599 INFO L87 Difference]: Start difference. First operand 14894 states and 19593 transitions. Second operand 7 states. [2020-10-13 08:09:02,734 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-13 08:09:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:03,726 INFO L93 Difference]: Finished difference Result 30042 states and 43964 transitions. [2020-10-13 08:09:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:09:03,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-13 08:09:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:03,801 INFO L225 Difference]: With dead ends: 30042 [2020-10-13 08:09:03,801 INFO L226 Difference]: Without dead ends: 15320 [2020-10-13 08:09:03,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:09:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15320 states. [2020-10-13 08:09:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15320 to 14702. [2020-10-13 08:09:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14702 states. [2020-10-13 08:09:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14702 states to 14702 states and 19263 transitions. [2020-10-13 08:09:04,251 INFO L78 Accepts]: Start accepts. Automaton has 14702 states and 19263 transitions. Word has length 462 [2020-10-13 08:09:04,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:04,251 INFO L479 AbstractCegarLoop]: Abstraction has 14702 states and 19263 transitions. [2020-10-13 08:09:04,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:09:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 14702 states and 19263 transitions. [2020-10-13 08:09:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-13 08:09:04,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:04,270 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:04,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:09:04,270 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:04,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:04,271 INFO L82 PathProgramCache]: Analyzing trace with hash 252074233, now seen corresponding path program 1 times [2020-10-13 08:09:04,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:04,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271386508] [2020-10-13 08:09:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:04,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:05,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:09,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:09,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-13 08:09:09,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:09:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4783 [2020-10-13 08:09:09,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:09:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:09:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:09,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:09,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:09,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:09,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:09,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:09,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:09,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:09:09,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:09:09,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:09,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:09:09,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:09:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:09,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:09,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:09:09,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-13 08:09:09,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:09:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:09:09,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-13 08:09:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:09,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:10,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:10,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:10,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 08:09:10,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:09:10,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:10,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 257 proven. 93 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-13 08:09:10,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271386508] [2020-10-13 08:09:10,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:10,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:09:10,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688232448] [2020-10-13 08:09:10,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:09:10,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:10,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:09:10,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:09:10,486 INFO L87 Difference]: Start difference. First operand 14702 states and 19263 transitions. Second operand 8 states. [2020-10-13 08:09:14,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:14,440 INFO L93 Difference]: Finished difference Result 31699 states and 41534 transitions. [2020-10-13 08:09:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 08:09:14,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 481 [2020-10-13 08:09:14,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:14,469 INFO L225 Difference]: With dead ends: 31699 [2020-10-13 08:09:14,469 INFO L226 Difference]: Without dead ends: 16425 [2020-10-13 08:09:14,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-13 08:09:14,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16425 states. [2020-10-13 08:09:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16425 to 14133. [2020-10-13 08:09:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14133 states. [2020-10-13 08:09:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14133 states to 14133 states and 17679 transitions. [2020-10-13 08:09:14,744 INFO L78 Accepts]: Start accepts. Automaton has 14133 states and 17679 transitions. Word has length 481 [2020-10-13 08:09:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:14,744 INFO L479 AbstractCegarLoop]: Abstraction has 14133 states and 17679 transitions. [2020-10-13 08:09:14,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:09:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 14133 states and 17679 transitions. [2020-10-13 08:09:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-13 08:09:14,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:14,765 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:14,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:09:14,765 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash -194073368, now seen corresponding path program 1 times [2020-10-13 08:09:14,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:14,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142043268] [2020-10-13 08:09:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:15,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:15,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 523 [2020-10-13 08:09:15,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:15,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-13 08:09:15,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:09:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:09:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:15,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:15,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:15,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:15,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:09:15,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:15,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:15,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:09:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:15,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:15,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:15,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:09:15,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:15,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:15,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:09:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 08:09:15,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:09:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:09:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:16,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 08:09:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-13 08:09:16,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142043268] [2020-10-13 08:09:16,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:16,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:16,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394363525] [2020-10-13 08:09:16,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:16,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:16,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:16,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:16,438 INFO L87 Difference]: Start difference. First operand 14133 states and 17679 transitions. Second operand 7 states. [2020-10-13 08:09:19,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:19,522 INFO L93 Difference]: Finished difference Result 29466 states and 37016 transitions. [2020-10-13 08:09:19,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:09:19,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 509 [2020-10-13 08:09:19,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:19,550 INFO L225 Difference]: With dead ends: 29466 [2020-10-13 08:09:19,550 INFO L226 Difference]: Without dead ends: 15339 [2020-10-13 08:09:19,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:09:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15339 states. [2020-10-13 08:09:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15339 to 15111. [2020-10-13 08:09:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15111 states. [2020-10-13 08:09:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15111 states to 15111 states and 18847 transitions. [2020-10-13 08:09:19,806 INFO L78 Accepts]: Start accepts. Automaton has 15111 states and 18847 transitions. Word has length 509 [2020-10-13 08:09:19,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:19,806 INFO L479 AbstractCegarLoop]: Abstraction has 15111 states and 18847 transitions. [2020-10-13 08:09:19,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:09:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15111 states and 18847 transitions. [2020-10-13 08:09:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-10-13 08:09:19,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:19,828 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:19,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:09:19,828 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:19,829 INFO L82 PathProgramCache]: Analyzing trace with hash 737392182, now seen corresponding path program 1 times [2020-10-13 08:09:19,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:19,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239837713] [2020-10-13 08:09:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 560 [2020-10-13 08:09:21,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1952 [2020-10-13 08:09:21,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:21,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:09:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:09:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:21,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:21,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:21,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:21,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:21,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:22,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:22,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:09:22,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 08:09:22,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:09:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:22,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:09:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:22,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:22,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:22,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:09:22,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:09:22,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:22,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:09:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-13 08:09:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:22,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:22,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:22,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:22,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:09:22,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:09:22,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:22,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:22,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-13 08:09:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:22,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:22,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:22,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:22,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:09:22,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:09:22,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 307 proven. 168 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 08:09:22,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239837713] [2020-10-13 08:09:22,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:22,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:22,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441173849] [2020-10-13 08:09:22,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:22,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:22,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:22,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:22,719 INFO L87 Difference]: Start difference. First operand 15111 states and 18847 transitions. Second operand 7 states. [2020-10-13 08:09:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:25,434 INFO L93 Difference]: Finished difference Result 32356 states and 42833 transitions. [2020-10-13 08:09:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:09:25,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 544 [2020-10-13 08:09:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:25,477 INFO L225 Difference]: With dead ends: 32356 [2020-10-13 08:09:25,478 INFO L226 Difference]: Without dead ends: 17251 [2020-10-13 08:09:25,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:09:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17251 states. [2020-10-13 08:09:25,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17251 to 16848. [2020-10-13 08:09:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16848 states. [2020-10-13 08:09:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16848 states to 16848 states and 20910 transitions. [2020-10-13 08:09:25,826 INFO L78 Accepts]: Start accepts. Automaton has 16848 states and 20910 transitions. Word has length 544 [2020-10-13 08:09:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:25,827 INFO L479 AbstractCegarLoop]: Abstraction has 16848 states and 20910 transitions. [2020-10-13 08:09:25,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:09:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16848 states and 20910 transitions. [2020-10-13 08:09:25,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-13 08:09:25,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:25,854 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:25,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:09:25,855 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:25,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:25,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1947880258, now seen corresponding path program 1 times [2020-10-13 08:09:25,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:25,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638259718] [2020-10-13 08:09:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 570 [2020-10-13 08:09:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-13 08:09:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 08:09:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:09:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:26,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:26,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:26,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:26,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:09:26,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:26,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:26,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:09:26,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:09:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:26,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:09:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:26,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:26,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:09:26,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:26,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:09:26,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:26,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:09:26,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:09:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:26,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:26,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:26,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:26,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:09:26,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:09:26,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:27,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-13 08:09:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:27,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:27,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:27,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:27,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:27,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:09:27,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:09:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 409 proven. 99 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-13 08:09:27,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638259718] [2020-10-13 08:09:27,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:27,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:27,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576803206] [2020-10-13 08:09:27,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:27,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:27,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:27,283 INFO L87 Difference]: Start difference. First operand 16848 states and 20910 transitions. Second operand 7 states. [2020-10-13 08:09:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:30,326 INFO L93 Difference]: Finished difference Result 34887 states and 43271 transitions. [2020-10-13 08:09:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:09:30,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 554 [2020-10-13 08:09:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:30,359 INFO L225 Difference]: With dead ends: 34887 [2020-10-13 08:09:30,359 INFO L226 Difference]: Without dead ends: 18045 [2020-10-13 08:09:30,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:09:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18045 states. [2020-10-13 08:09:30,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18045 to 17432. [2020-10-13 08:09:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17432 states. [2020-10-13 08:09:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17432 states to 17432 states and 21112 transitions. [2020-10-13 08:09:30,764 INFO L78 Accepts]: Start accepts. Automaton has 17432 states and 21112 transitions. Word has length 554 [2020-10-13 08:09:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:30,765 INFO L479 AbstractCegarLoop]: Abstraction has 17432 states and 21112 transitions. [2020-10-13 08:09:30,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:09:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17432 states and 21112 transitions. [2020-10-13 08:09:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-13 08:09:30,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:30,790 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:30,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:09:30,790 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:30,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:30,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1012951154, now seen corresponding path program 1 times [2020-10-13 08:09:30,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:30,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135443643] [2020-10-13 08:09:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:31,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:34,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:34,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:35,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:35,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 635 [2020-10-13 08:09:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:09:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 08:09:35,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:35,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:09:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:09:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:36,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:36,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:36,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:36,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:36,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:09:36,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:09:36,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:36,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:09:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:36,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:36,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:36,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:09:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:09:36,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:09:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-13 08:09:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:36,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:36,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:09:36,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 08:09:36,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:36,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-13 08:09:36,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-10-13 08:09:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:36,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:36,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:36,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:36,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:09:36,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:09:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:36,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 450 proven. 149 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2020-10-13 08:09:37,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135443643] [2020-10-13 08:09:37,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:37,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:09:37,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653991194] [2020-10-13 08:09:37,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:09:37,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:37,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:09:37,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:09:37,454 INFO L87 Difference]: Start difference. First operand 17432 states and 21112 transitions. Second operand 6 states. [2020-10-13 08:09:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:40,035 INFO L93 Difference]: Finished difference Result 34725 states and 42062 transitions. [2020-10-13 08:09:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:09:40,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 619 [2020-10-13 08:09:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:40,067 INFO L225 Difference]: With dead ends: 34725 [2020-10-13 08:09:40,067 INFO L226 Difference]: Without dead ends: 17279 [2020-10-13 08:09:40,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:09:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2020-10-13 08:09:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 17242. [2020-10-13 08:09:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17242 states. [2020-10-13 08:09:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17242 states to 17242 states and 20819 transitions. [2020-10-13 08:09:40,363 INFO L78 Accepts]: Start accepts. Automaton has 17242 states and 20819 transitions. Word has length 619 [2020-10-13 08:09:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:40,363 INFO L479 AbstractCegarLoop]: Abstraction has 17242 states and 20819 transitions. [2020-10-13 08:09:40,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:09:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 17242 states and 20819 transitions. [2020-10-13 08:09:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2020-10-13 08:09:40,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:40,394 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:40,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:09:40,394 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:40,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:40,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1927180291, now seen corresponding path program 1 times [2020-10-13 08:09:40,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:40,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539148658] [2020-10-13 08:09:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:41,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 709 [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4939 [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:09:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-13 08:09:45,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:45,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:45,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:45,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:45,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:09:45,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:09:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:45,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:45,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:45,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:09:45,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:09:45,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-13 08:09:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:09:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:45,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:09:45,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 08:09:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:09:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:09:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:09:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:45,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:09:46,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-13 08:09:46,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:46,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:09:46,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-13 08:09:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:46,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:09:46,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:09:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-13 08:09:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:46,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:46,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:46,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:09:46,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:09:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 295 proven. 807 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 08:09:46,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539148658] [2020-10-13 08:09:46,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:46,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:09:46,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584066] [2020-10-13 08:09:46,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:09:46,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:46,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:09:46,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:09:46,672 INFO L87 Difference]: Start difference. First operand 17242 states and 20819 transitions. Second operand 10 states. [2020-10-13 08:09:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:09:52,664 INFO L93 Difference]: Finished difference Result 51042 states and 61972 transitions. [2020-10-13 08:09:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 08:09:52,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 691 [2020-10-13 08:09:52,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:09:52,730 INFO L225 Difference]: With dead ends: 51042 [2020-10-13 08:09:52,730 INFO L226 Difference]: Without dead ends: 32637 [2020-10-13 08:09:52,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-13 08:09:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32637 states. [2020-10-13 08:09:53,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32637 to 30461. [2020-10-13 08:09:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30461 states. [2020-10-13 08:09:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30461 states to 30461 states and 35898 transitions. [2020-10-13 08:09:53,204 INFO L78 Accepts]: Start accepts. Automaton has 30461 states and 35898 transitions. Word has length 691 [2020-10-13 08:09:53,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:09:53,205 INFO L479 AbstractCegarLoop]: Abstraction has 30461 states and 35898 transitions. [2020-10-13 08:09:53,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:09:53,205 INFO L276 IsEmpty]: Start isEmpty. Operand 30461 states and 35898 transitions. [2020-10-13 08:09:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-13 08:09:53,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:09:53,233 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:09:53,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:09:53,233 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:09:53,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:09:53,234 INFO L82 PathProgramCache]: Analyzing trace with hash 225370557, now seen corresponding path program 1 times [2020-10-13 08:09:53,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:09:53,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217604635] [2020-10-13 08:09:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:09:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:55,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 786 [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2580 [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:09:55,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:55,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:09:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:55,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:55,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:09:55,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:55,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:09:55,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:55,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:55,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:55,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:09:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:09:56,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:09:56,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:09:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:09:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:09:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:09:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:09:56,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 08:09:56,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:09:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:09:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:09:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 08:09:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:09:56,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:09:56,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:09:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:56,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-10-13 08:09:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:09:56,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 08:09:56,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 08:09:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2020-10-13 08:09:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:56,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:56,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-10-13 08:09:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:09:56,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:09:56,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:09:56,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:09:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:09:56,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:09:56,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:09:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:09:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:09:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:09:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:09:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 407 proven. 270 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2020-10-13 08:09:57,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217604635] [2020-10-13 08:09:57,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:09:57,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:09:57,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583190899] [2020-10-13 08:09:57,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:09:57,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:09:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:09:57,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:09:57,009 INFO L87 Difference]: Start difference. First operand 30461 states and 35898 transitions. Second operand 7 states. [2020-10-13 08:10:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:00,047 INFO L93 Difference]: Finished difference Result 61597 states and 72531 transitions. [2020-10-13 08:10:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:10:00,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 766 [2020-10-13 08:10:00,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:00,103 INFO L225 Difference]: With dead ends: 61597 [2020-10-13 08:10:00,104 INFO L226 Difference]: Without dead ends: 31334 [2020-10-13 08:10:00,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:10:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31334 states. [2020-10-13 08:10:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31334 to 31267. [2020-10-13 08:10:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31267 states. [2020-10-13 08:10:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31267 states to 31267 states and 36217 transitions. [2020-10-13 08:10:00,514 INFO L78 Accepts]: Start accepts. Automaton has 31267 states and 36217 transitions. Word has length 766 [2020-10-13 08:10:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:00,514 INFO L479 AbstractCegarLoop]: Abstraction has 31267 states and 36217 transitions. [2020-10-13 08:10:00,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 31267 states and 36217 transitions. [2020-10-13 08:10:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2020-10-13 08:10:00,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:00,545 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:00,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:10:00,545 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:00,546 INFO L82 PathProgramCache]: Analyzing trace with hash -116670974, now seen corresponding path program 1 times [2020-10-13 08:10:00,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:00,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917388786] [2020-10-13 08:10:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 811 [2020-10-13 08:10:03,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2793 [2020-10-13 08:10:03,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-10-13 08:10:03,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 08:10:03,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:03,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:10:03,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:10:03,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:10:03,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:10:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:10:03,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:10:03,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:03,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 08:10:03,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-13 08:10:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:10:03,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 08:10:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:10:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-10-13 08:10:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:10:03,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:10:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 08:10:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-10-13 08:10:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:03,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:03,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:10:03,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:10:03,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:10:03,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:03,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-10-13 08:10:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:04,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:04,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:10:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:10:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:10:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1851 backedges. 519 proven. 251 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2020-10-13 08:10:04,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917388786] [2020-10-13 08:10:04,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:04,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:04,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136906461] [2020-10-13 08:10:04,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:04,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:04,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:04,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:04,284 INFO L87 Difference]: Start difference. First operand 31267 states and 36217 transitions. Second operand 7 states. [2020-10-13 08:10:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:07,708 INFO L93 Difference]: Finished difference Result 60145 states and 69863 transitions. [2020-10-13 08:10:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:10:07,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 791 [2020-10-13 08:10:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:07,767 INFO L225 Difference]: With dead ends: 60145 [2020-10-13 08:10:07,767 INFO L226 Difference]: Without dead ends: 32468 [2020-10-13 08:10:07,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:10:07,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32468 states. [2020-10-13 08:10:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32468 to 32221. [2020-10-13 08:10:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32221 states. [2020-10-13 08:10:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32221 states to 32221 states and 37293 transitions. [2020-10-13 08:10:08,192 INFO L78 Accepts]: Start accepts. Automaton has 32221 states and 37293 transitions. Word has length 791 [2020-10-13 08:10:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:08,193 INFO L479 AbstractCegarLoop]: Abstraction has 32221 states and 37293 transitions. [2020-10-13 08:10:08,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 32221 states and 37293 transitions. [2020-10-13 08:10:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2020-10-13 08:10:08,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:08,224 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:08,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:10:08,225 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:08,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:08,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2143941701, now seen corresponding path program 1 times [2020-10-13 08:10:08,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:08,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672383260] [2020-10-13 08:10:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:13,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:13,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 866 [2020-10-13 08:10:13,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:10:13,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-13 08:10:13,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:13,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:10:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-13 08:10:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:13,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:13,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:13,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:13,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:13,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:13,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:13,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:13,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:10:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:10:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:13,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:13,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 08:10:13,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:13,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 08:10:13,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:13,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-13 08:10:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-13 08:10:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:13,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-10-13 08:10:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:14,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:14,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:10:14,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:10:14,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 08:10:14,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:14,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:14,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-10-13 08:10:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:14,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:14,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2020-10-13 08:10:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:14,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:14,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:14,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:10:14,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:10:14,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:10:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 453 proven. 476 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2020-10-13 08:10:15,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672383260] [2020-10-13 08:10:15,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:15,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:15,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433679080] [2020-10-13 08:10:15,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:15,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:15,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:15,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:15,048 INFO L87 Difference]: Start difference. First operand 32221 states and 37293 transitions. Second operand 7 states. [2020-10-13 08:10:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:18,000 INFO L93 Difference]: Finished difference Result 60720 states and 70455 transitions. [2020-10-13 08:10:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 08:10:18,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 846 [2020-10-13 08:10:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:18,080 INFO L225 Difference]: With dead ends: 60720 [2020-10-13 08:10:18,080 INFO L226 Difference]: Without dead ends: 31505 [2020-10-13 08:10:18,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 08:10:18,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31505 states. [2020-10-13 08:10:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31505 to 31067. [2020-10-13 08:10:18,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31067 states. [2020-10-13 08:10:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31067 states to 31067 states and 35757 transitions. [2020-10-13 08:10:18,491 INFO L78 Accepts]: Start accepts. Automaton has 31067 states and 35757 transitions. Word has length 846 [2020-10-13 08:10:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:18,491 INFO L479 AbstractCegarLoop]: Abstraction has 31067 states and 35757 transitions. [2020-10-13 08:10:18,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 31067 states and 35757 transitions. [2020-10-13 08:10:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-10-13 08:10:18,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:18,524 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:18,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:10:18,525 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2036654270, now seen corresponding path program 1 times [2020-10-13 08:10:18,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:18,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108029683] [2020-10-13 08:10:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:23,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:23,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 884 [2020-10-13 08:10:23,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:10:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 08:10:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:23,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:10:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:10:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:23,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:23,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:23,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:23,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:23,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:23,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:23,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:23,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:10:23,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:10:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:23,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:10:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:23,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 08:10:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-13 08:10:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:24,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:24,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:10:24,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 08:10:24,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:24,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:10:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:24,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-13 08:10:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:24,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:24,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:10:24,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:10:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:10:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-13 08:10:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:24,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:10:24,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:10:24,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 08:10:24,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:24,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:24,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2020-10-13 08:10:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:24,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:10:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:10:24,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:10:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:24,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-10-13 08:10:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:24,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:24,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:10:24,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 08:10:24,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:10:24,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:24,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2259 backedges. 549 proven. 270 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2020-10-13 08:10:25,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108029683] [2020-10-13 08:10:25,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:25,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:25,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377768970] [2020-10-13 08:10:25,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:25,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:25,314 INFO L87 Difference]: Start difference. First operand 31067 states and 35757 transitions. Second operand 7 states. [2020-10-13 08:10:26,646 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-10-13 08:10:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:27,991 INFO L93 Difference]: Finished difference Result 58467 states and 67454 transitions. [2020-10-13 08:10:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:10:27,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 862 [2020-10-13 08:10:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:28,044 INFO L225 Difference]: With dead ends: 58467 [2020-10-13 08:10:28,044 INFO L226 Difference]: Without dead ends: 30747 [2020-10-13 08:10:28,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:10:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30747 states. [2020-10-13 08:10:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30747 to 30109. [2020-10-13 08:10:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30109 states. [2020-10-13 08:10:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30109 states to 30109 states and 34594 transitions. [2020-10-13 08:10:28,412 INFO L78 Accepts]: Start accepts. Automaton has 30109 states and 34594 transitions. Word has length 862 [2020-10-13 08:10:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:28,412 INFO L479 AbstractCegarLoop]: Abstraction has 30109 states and 34594 transitions. [2020-10-13 08:10:28,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 30109 states and 34594 transitions. [2020-10-13 08:10:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2020-10-13 08:10:28,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:28,442 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:28,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:10:28,442 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:28,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:28,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1255455343, now seen corresponding path program 1 times [2020-10-13 08:10:28,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:28,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859216125] [2020-10-13 08:10:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:28,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:32,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 926 [2020-10-13 08:10:32,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3933 [2020-10-13 08:10:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-13 08:10:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:10:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:32,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:32,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:10:32,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:32,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 08:10:32,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:32,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:32,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:32,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:32,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:10:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:32,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 08:10:32,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:32,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:10:32,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:32,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:32,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-13 08:10:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-13 08:10:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:32,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:10:32,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:10:32,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:10:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-13 08:10:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:10:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-13 08:10:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:32,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:32,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:10:32,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 08:10:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 08:10:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-10-13 08:10:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:33,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:33,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:10:33,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:33,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:10:33,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:10:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2020-10-13 08:10:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:33,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:33,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:33,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2423 backedges. 549 proven. 270 refuted. 0 times theorem prover too weak. 1604 trivial. 0 not checked. [2020-10-13 08:10:33,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859216125] [2020-10-13 08:10:33,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:33,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:33,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630570882] [2020-10-13 08:10:33,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:33,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:33,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:33,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:33,654 INFO L87 Difference]: Start difference. First operand 30109 states and 34594 transitions. Second operand 7 states. [2020-10-13 08:10:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:37,793 INFO L93 Difference]: Finished difference Result 60649 states and 69688 transitions. [2020-10-13 08:10:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:10:37,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 904 [2020-10-13 08:10:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:37,848 INFO L225 Difference]: With dead ends: 60649 [2020-10-13 08:10:37,848 INFO L226 Difference]: Without dead ends: 30738 [2020-10-13 08:10:37,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:10:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30738 states. [2020-10-13 08:10:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30738 to 30667. [2020-10-13 08:10:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30667 states. [2020-10-13 08:10:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30667 states to 30667 states and 35072 transitions. [2020-10-13 08:10:38,227 INFO L78 Accepts]: Start accepts. Automaton has 30667 states and 35072 transitions. Word has length 904 [2020-10-13 08:10:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:38,227 INFO L479 AbstractCegarLoop]: Abstraction has 30667 states and 35072 transitions. [2020-10-13 08:10:38,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 30667 states and 35072 transitions. [2020-10-13 08:10:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2020-10-13 08:10:38,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:38,260 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:38,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:10:38,260 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:38,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:38,260 INFO L82 PathProgramCache]: Analyzing trace with hash -963531889, now seen corresponding path program 1 times [2020-10-13 08:10:38,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:38,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834291956] [2020-10-13 08:10:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:38,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:39,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:40,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:43,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:43,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-13 08:10:43,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 08:10:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 08:10:43,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 08:10:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:10:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:43,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:43,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:43,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:10:43,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:43,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:43,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:43,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:43,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:10:43,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:43,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:10:43,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:43,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:10:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:43,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:43,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:10:43,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:10:43,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:10:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:10:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:43,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:43,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:10:43,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:43,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-13 08:10:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:43,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:44,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:44,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 08:10:44,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 08:10:44,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:44,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-13 08:10:44,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-13 08:10:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:10:44,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 08:10:44,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:44,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 08:10:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:44,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2020-10-13 08:10:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:44,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:44,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:10:44,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:10:44,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:10:44,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:44,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:44,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2020-10-13 08:10:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:44,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:44,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 605 proven. 420 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2020-10-13 08:10:44,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834291956] [2020-10-13 08:10:44,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:44,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:44,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743042706] [2020-10-13 08:10:44,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:44,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:44,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:44,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:44,842 INFO L87 Difference]: Start difference. First operand 30667 states and 35072 transitions. Second operand 7 states. [2020-10-13 08:10:48,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:48,117 INFO L93 Difference]: Finished difference Result 57620 states and 66046 transitions. [2020-10-13 08:10:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:10:48,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 930 [2020-10-13 08:10:48,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:48,171 INFO L225 Difference]: With dead ends: 57620 [2020-10-13 08:10:48,171 INFO L226 Difference]: Without dead ends: 30541 [2020-10-13 08:10:48,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:10:48,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30541 states. [2020-10-13 08:10:48,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30541 to 30477. [2020-10-13 08:10:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30477 states. [2020-10-13 08:10:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30477 states to 30477 states and 34857 transitions. [2020-10-13 08:10:48,561 INFO L78 Accepts]: Start accepts. Automaton has 30477 states and 34857 transitions. Word has length 930 [2020-10-13 08:10:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:48,562 INFO L479 AbstractCegarLoop]: Abstraction has 30477 states and 34857 transitions. [2020-10-13 08:10:48,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 30477 states and 34857 transitions. [2020-10-13 08:10:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-10-13 08:10:48,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:48,778 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:48,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:10:48,778 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:48,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:48,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1371366516, now seen corresponding path program 1 times [2020-10-13 08:10:48,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:48,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267424215] [2020-10-13 08:10:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:48,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:49,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:49,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:53,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:53,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 960 [2020-10-13 08:10:53,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:10:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 08:10:53,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 475 [2020-10-13 08:10:53,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:10:53,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:54,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:10:54,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:54,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:54,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:54,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:10:54,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:10:54,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:54,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:10:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:10:54,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:10:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:10:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 08:10:54,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 08:10:54,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-13 08:10:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:10:54,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:10:54,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 08:10:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-10-13 08:10:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 08:10:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2020-10-13 08:10:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:10:54,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:10:54,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 08:10:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:54,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:54,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-10-13 08:10:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:54,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 08:10:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:54,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 08:10:54,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 08:10:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 852 proven. 231 refuted. 0 times theorem prover too weak. 1474 trivial. 0 not checked. [2020-10-13 08:10:55,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267424215] [2020-10-13 08:10:55,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:55,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:55,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880372937] [2020-10-13 08:10:55,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:55,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:55,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:55,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:55,109 INFO L87 Difference]: Start difference. First operand 30477 states and 34857 transitions. Second operand 7 states.