/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:38:43,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:38:43,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:38:43,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:38:43,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:38:43,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:38:43,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:38:43,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:38:43,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:38:43,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:38:43,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:38:43,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:38:43,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:38:43,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:38:43,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:38:43,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:38:43,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:38:43,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:38:43,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:38:43,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:38:43,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:38:43,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:38:43,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:38:43,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:38:43,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:38:43,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:38:43,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:38:43,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:38:43,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:38:43,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:38:43,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:38:43,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:38:43,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:38:43,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:38:43,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:38:43,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:38:43,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:38:43,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:38:43,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:38:43,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:38:43,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:38:43,481 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 [2020-10-14 02:38:43,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:38:43,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:38:43,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:38:43,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:38:43,531 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:38:43,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:38:43,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:38:43,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:38:43,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:38:43,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:38:43,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:38:43,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:38:43,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:38:43,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:38:43,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:38:43,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:38:43,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:38:43,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:38:43,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:38:43,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:38:43,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:38:43,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:38:43,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:38:43,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:38:43,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:38:43,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:38:43,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:38:43,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:38:43,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:38:43,536 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:38:43,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:38:43,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:38:43,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:38:43,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:38:43,919 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:38:43,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-14 02:38:43,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8208222ea/837bcdbf0bc249a4a7829519497cbbfc/FLAGb1da395b7 [2020-10-14 02:38:44,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:38:44,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label45.c [2020-10-14 02:38:44,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8208222ea/837bcdbf0bc249a4a7829519497cbbfc/FLAGb1da395b7 [2020-10-14 02:38:44,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8208222ea/837bcdbf0bc249a4a7829519497cbbfc [2020-10-14 02:38:44,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:38:44,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:38:44,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:38:44,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:38:44,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:38:44,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:44" (1/1) ... [2020-10-14 02:38:44,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e8547d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:44, skipping insertion in model container [2020-10-14 02:38:44,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:38:44" (1/1) ... [2020-10-14 02:38:44,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:38:44,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:38:45,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:38:45,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:38:45,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:38:45,826 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:38:45,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45 WrapperNode [2020-10-14 02:38:45,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:38:45,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:38:45,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:38:45,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:38:45,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (1/1) ... [2020-10-14 02:38:45,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (1/1) ... [2020-10-14 02:38:45,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (1/1) ... [2020-10-14 02:38:45,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (1/1) ... [2020-10-14 02:38:45,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (1/1) ... [2020-10-14 02:38:45,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (1/1) ... [2020-10-14 02:38:46,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (1/1) ... [2020-10-14 02:38:46,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:38:46,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:38:46,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:38:46,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:38:46,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (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 [2020-10-14 02:38:46,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:38:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:38:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:38:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:38:46,117 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:38:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:38:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:38:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:38:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:38:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:38:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:38:48,106 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:38:48,106 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:38:48,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:48 BoogieIcfgContainer [2020-10-14 02:38:48,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:38:48,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:38:48,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:38:48,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:38:48,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:38:44" (1/3) ... [2020-10-14 02:38:48,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a05f62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:48, skipping insertion in model container [2020-10-14 02:38:48,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:38:45" (2/3) ... [2020-10-14 02:38:48,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a05f62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:38:48, skipping insertion in model container [2020-10-14 02:38:48,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:38:48" (3/3) ... [2020-10-14 02:38:48,124 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label45.c [2020-10-14 02:38:48,135 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:38:48,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:38:48,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:38:48,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:38:48,187 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:38:48,188 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:38:48,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:38:48,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:38:48,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:38:48,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:38:48,189 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:38:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-14 02:38:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 02:38:48,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:48,228 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] [2020-10-14 02:38:48,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:48,235 INFO L82 PathProgramCache]: Analyzing trace with hash 489926403, now seen corresponding path program 1 times [2020-10-14 02:38:48,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:48,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304820978] [2020-10-14 02:38:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:48,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:48,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 02:38:48,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-14 02:38:48,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:48,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:38:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:38:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 02:38:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:38:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:49,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:49,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:49,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:49,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 02:38:49,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:49,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:38:49,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:49,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:38:49,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304820978] [2020-10-14 02:38:49,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:38:49,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:38:49,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33736528] [2020-10-14 02:38:49,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:38:49,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:49,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:38:49,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:38:49,108 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-14 02:38:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:51,484 INFO L93 Difference]: Finished difference Result 788 states and 1382 transitions. [2020-10-14 02:38:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:51,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-14 02:38:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:51,508 INFO L225 Difference]: With dead ends: 788 [2020-10-14 02:38:51,508 INFO L226 Difference]: Without dead ends: 431 [2020-10-14 02:38:51,531 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 [2020-10-14 02:38:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-14 02:38:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2020-10-14 02:38:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-14 02:38:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-14 02:38:51,628 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 38 [2020-10-14 02:38:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:51,629 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-14 02:38:51,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:38:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-14 02:38:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 02:38:51,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:51,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:51,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:38:51,635 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:51,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:51,636 INFO L82 PathProgramCache]: Analyzing trace with hash -754081118, now seen corresponding path program 1 times [2020-10-14 02:38:51,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:51,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105553686] [2020-10-14 02:38:51,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:52,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:53,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:53,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:38:53,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1591 [2020-10-14 02:38:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:53,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:38:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 02:38:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:53,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:53,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:53,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:53,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:53,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:38:53,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:53,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:38:53,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:53,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:53,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:38:53,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 02:38:53,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:53,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:38:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 02:38:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:38:53,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105553686] [2020-10-14 02:38:53,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:53,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:53,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616057684] [2020-10-14 02:38:53,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:53,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:53,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:53,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:53,625 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 5 states. [2020-10-14 02:38:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:38:55,944 INFO L93 Difference]: Finished difference Result 1248 states and 1816 transitions. [2020-10-14 02:38:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:38:55,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-10-14 02:38:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:38:55,951 INFO L225 Difference]: With dead ends: 1248 [2020-10-14 02:38:55,952 INFO L226 Difference]: Without dead ends: 829 [2020-10-14 02:38:55,954 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 [2020-10-14 02:38:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2020-10-14 02:38:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2020-10-14 02:38:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2020-10-14 02:38:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1089 transitions. [2020-10-14 02:38:56,007 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1089 transitions. Word has length 110 [2020-10-14 02:38:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:38:56,008 INFO L479 AbstractCegarLoop]: Abstraction has 815 states and 1089 transitions. [2020-10-14 02:38:56,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:38:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1089 transitions. [2020-10-14 02:38:56,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 02:38:56,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:38:56,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:38:56,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:38:56,014 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:38:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:38:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash -517552514, now seen corresponding path program 1 times [2020-10-14 02:38:56,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:38:56,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719162919] [2020-10-14 02:38:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:38:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:57,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:57,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:38:57,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:38:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1739 [2020-10-14 02:38:57,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:57,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:38:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 02:38:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 02:38:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:57,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:38:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:38:57,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:38:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:57,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:38:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:38:57,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:57,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:38:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:38:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:38:57,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:38:57,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 02:38:57,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:38:57,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 02:38:57,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:38:57,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:38:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:38:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:38:57,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 02:38:57,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:38:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:38:58,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719162919] [2020-10-14 02:38:58,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:38:58,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:38:58,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682197048] [2020-10-14 02:38:58,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:38:58,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:38:58,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:38:58,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:38:58,019 INFO L87 Difference]: Start difference. First operand 815 states and 1089 transitions. Second operand 5 states. [2020-10-14 02:39:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:00,236 INFO L93 Difference]: Finished difference Result 2025 states and 2774 transitions. [2020-10-14 02:39:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:00,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-14 02:39:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:00,245 INFO L225 Difference]: With dead ends: 2025 [2020-10-14 02:39:00,245 INFO L226 Difference]: Without dead ends: 1216 [2020-10-14 02:39:00,247 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 [2020-10-14 02:39:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-10-14 02:39:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1198. [2020-10-14 02:39:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-14 02:39:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1562 transitions. [2020-10-14 02:39:00,293 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1562 transitions. Word has length 112 [2020-10-14 02:39:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:00,294 INFO L479 AbstractCegarLoop]: Abstraction has 1198 states and 1562 transitions. [2020-10-14 02:39:00,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1562 transitions. [2020-10-14 02:39:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 02:39:00,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:00,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:00,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:39:00,298 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:00,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash -393002478, now seen corresponding path program 1 times [2020-10-14 02:39:00,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:00,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053732297] [2020-10-14 02:39:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:01,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:01,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:39:01,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:39:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-14 02:39:01,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:01,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-14 02:39:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 02:39:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:39:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:01,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:01,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:01,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:01,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:01,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:01,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 02:39:01,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 02:39:01,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:01,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 02:39:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:39:01,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053732297] [2020-10-14 02:39:01,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:01,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:01,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651107182] [2020-10-14 02:39:01,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:01,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:01,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:01,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:01,766 INFO L87 Difference]: Start difference. First operand 1198 states and 1562 transitions. Second operand 5 states. [2020-10-14 02:39:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:04,080 INFO L93 Difference]: Finished difference Result 2790 states and 3731 transitions. [2020-10-14 02:39:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:04,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-14 02:39:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:04,091 INFO L225 Difference]: With dead ends: 2790 [2020-10-14 02:39:04,091 INFO L226 Difference]: Without dead ends: 1598 [2020-10-14 02:39:04,094 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 [2020-10-14 02:39:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2020-10-14 02:39:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1581. [2020-10-14 02:39:04,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-10-14 02:39:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2041 transitions. [2020-10-14 02:39:04,144 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2041 transitions. Word has length 118 [2020-10-14 02:39:04,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:04,145 INFO L479 AbstractCegarLoop]: Abstraction has 1581 states and 2041 transitions. [2020-10-14 02:39:04,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2041 transitions. [2020-10-14 02:39:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 02:39:04,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:04,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:04,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:39:04,148 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:04,149 INFO L82 PathProgramCache]: Analyzing trace with hash -236759642, now seen corresponding path program 1 times [2020-10-14 02:39:04,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:04,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188302232] [2020-10-14 02:39:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:04,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:05,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:05,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 02:39:05,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:05,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-14 02:39:05,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:05,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:05,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:05,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 02:39:05,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 02:39:05,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:05,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:05,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:05,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:05,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:05,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:05,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:05,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:05,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:39:05,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:05,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:39:05,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:05,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 02:39:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:39:05,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188302232] [2020-10-14 02:39:05,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:05,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:05,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638077423] [2020-10-14 02:39:05,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:05,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:05,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:05,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:05,252 INFO L87 Difference]: Start difference. First operand 1581 states and 2041 transitions. Second operand 5 states. [2020-10-14 02:39:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:07,678 INFO L93 Difference]: Finished difference Result 3561 states and 4706 transitions. [2020-10-14 02:39:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:07,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 02:39:07,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:07,691 INFO L225 Difference]: With dead ends: 3561 [2020-10-14 02:39:07,691 INFO L226 Difference]: Without dead ends: 1986 [2020-10-14 02:39:07,696 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 [2020-10-14 02:39:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2020-10-14 02:39:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1964. [2020-10-14 02:39:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2020-10-14 02:39:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2527 transitions. [2020-10-14 02:39:07,760 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2527 transitions. Word has length 124 [2020-10-14 02:39:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:07,760 INFO L479 AbstractCegarLoop]: Abstraction has 1964 states and 2527 transitions. [2020-10-14 02:39:07,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2527 transitions. [2020-10-14 02:39:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 02:39:07,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:07,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:39:07,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:39:07,763 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:07,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:07,764 INFO L82 PathProgramCache]: Analyzing trace with hash 536122646, now seen corresponding path program 1 times [2020-10-14 02:39:07,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:07,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499510146] [2020-10-14 02:39:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 02:39:08,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 02:39:08,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:39:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:39:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-14 02:39:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:08,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:08,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 02:39:08,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:39:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:08,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:08,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:08,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:08,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 02:39:08,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:08,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:39:08,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499510146] [2020-10-14 02:39:08,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:39:08,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:39:08,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304848262] [2020-10-14 02:39:08,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:08,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:08,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:08,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:08,616 INFO L87 Difference]: Start difference. First operand 1964 states and 2527 transitions. Second operand 7 states. [2020-10-14 02:39:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:10,928 INFO L93 Difference]: Finished difference Result 4345 states and 5614 transitions. [2020-10-14 02:39:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:39:10,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-14 02:39:10,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:10,941 INFO L225 Difference]: With dead ends: 4345 [2020-10-14 02:39:10,941 INFO L226 Difference]: Without dead ends: 2387 [2020-10-14 02:39:10,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:39:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2020-10-14 02:39:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2374. [2020-10-14 02:39:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-14 02:39:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3005 transitions. [2020-10-14 02:39:11,009 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3005 transitions. Word has length 132 [2020-10-14 02:39:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:11,009 INFO L479 AbstractCegarLoop]: Abstraction has 2374 states and 3005 transitions. [2020-10-14 02:39:11,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3005 transitions. [2020-10-14 02:39:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-14 02:39:11,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:11,014 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:11,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:39:11,014 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:11,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1092399822, now seen corresponding path program 1 times [2020-10-14 02:39:11,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:11,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409317332] [2020-10-14 02:39:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:12,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:13,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:14,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:14,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 02:39:14,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:39:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3863 [2020-10-14 02:39:14,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:14,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:39:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:39:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:15,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:15,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:15,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:15,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:15,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:39:15,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:15,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:15,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:15,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:15,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:15,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:15,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:39:15,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:15,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 02:39:15,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:15,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:15,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:15,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:39:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:15,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:39:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:15,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:39:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 02:39:15,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:15,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:39:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:15,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409317332] [2020-10-14 02:39:15,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:15,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:15,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116111585] [2020-10-14 02:39:15,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:15,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:15,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:15,498 INFO L87 Difference]: Start difference. First operand 2374 states and 3005 transitions. Second operand 7 states. [2020-10-14 02:39:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:17,915 INFO L93 Difference]: Finished difference Result 5350 states and 7094 transitions. [2020-10-14 02:39:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:39:17,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-10-14 02:39:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:17,938 INFO L225 Difference]: With dead ends: 5350 [2020-10-14 02:39:17,938 INFO L226 Difference]: Without dead ends: 3360 [2020-10-14 02:39:17,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:39:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2020-10-14 02:39:18,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3351. [2020-10-14 02:39:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2020-10-14 02:39:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4241 transitions. [2020-10-14 02:39:18,032 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4241 transitions. Word has length 201 [2020-10-14 02:39:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:18,033 INFO L479 AbstractCegarLoop]: Abstraction has 3351 states and 4241 transitions. [2020-10-14 02:39:18,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:18,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4241 transitions. [2020-10-14 02:39:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 02:39:18,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:18,038 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:18,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:39:18,038 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1051537525, now seen corresponding path program 1 times [2020-10-14 02:39:18,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:18,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325520812] [2020-10-14 02:39:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:18,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 02:39:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:39:20,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2489 [2020-10-14 02:39:20,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:20,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:39:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:39:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:20,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:20,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:20,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:20,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:20,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:20,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:39:20,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:39:20,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:20,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:20,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:39:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:39:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:21,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:21,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:21,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:21,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 02:39:21,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:21,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:21,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:21,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:39:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:21,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325520812] [2020-10-14 02:39:21,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:21,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:39:21,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140516609] [2020-10-14 02:39:21,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:39:21,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:21,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:39:21,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:39:21,376 INFO L87 Difference]: Start difference. First operand 3351 states and 4241 transitions. Second operand 8 states. [2020-10-14 02:39:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:24,899 INFO L93 Difference]: Finished difference Result 8672 states and 11092 transitions. [2020-10-14 02:39:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 02:39:24,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-10-14 02:39:24,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:24,926 INFO L225 Difference]: With dead ends: 8672 [2020-10-14 02:39:24,927 INFO L226 Difference]: Without dead ends: 5705 [2020-10-14 02:39:24,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 02:39:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2020-10-14 02:39:25,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 5307. [2020-10-14 02:39:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5307 states. [2020-10-14 02:39:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 6642 transitions. [2020-10-14 02:39:25,069 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 6642 transitions. Word has length 204 [2020-10-14 02:39:25,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:25,069 INFO L479 AbstractCegarLoop]: Abstraction has 5307 states and 6642 transitions. [2020-10-14 02:39:25,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:39:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 6642 transitions. [2020-10-14 02:39:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-14 02:39:25,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:25,075 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:25,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:39:25,075 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:25,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:25,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1314218599, now seen corresponding path program 1 times [2020-10-14 02:39:25,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:25,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207571873] [2020-10-14 02:39:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:30,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-14 02:39:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:39:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 02:39:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:30,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 02:39:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 02:39:30,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:39:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:30,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:30,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:30,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:39:30,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:30,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:30,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:30,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:30,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:30,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 02:39:30,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:30,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 02:39:30,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:30,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 02:39:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:39:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 02:39:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:30,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:30,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:30,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 02:39:30,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 02:39:30,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:30,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 02:39:30,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:30,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207571873] [2020-10-14 02:39:30,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:30,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:30,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960361915] [2020-10-14 02:39:30,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:30,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:30,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:30,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:30,947 INFO L87 Difference]: Start difference. First operand 5307 states and 6642 transitions. Second operand 7 states. [2020-10-14 02:39:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:34,289 INFO L93 Difference]: Finished difference Result 8524 states and 10809 transitions. [2020-10-14 02:39:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:39:34,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-14 02:39:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:34,313 INFO L225 Difference]: With dead ends: 8524 [2020-10-14 02:39:34,313 INFO L226 Difference]: Without dead ends: 5337 [2020-10-14 02:39:34,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:39:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2020-10-14 02:39:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 5314. [2020-10-14 02:39:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5314 states. [2020-10-14 02:39:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 6630 transitions. [2020-10-14 02:39:34,451 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 6630 transitions. Word has length 227 [2020-10-14 02:39:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:34,452 INFO L479 AbstractCegarLoop]: Abstraction has 5314 states and 6630 transitions. [2020-10-14 02:39:34,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 6630 transitions. [2020-10-14 02:39:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 02:39:34,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:34,463 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:34,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:39:34,463 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:34,464 INFO L82 PathProgramCache]: Analyzing trace with hash 428765644, now seen corresponding path program 1 times [2020-10-14 02:39:34,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:34,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537964284] [2020-10-14 02:39:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:34,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:35,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 02:39:35,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:39:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-10-14 02:39:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:35,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:35,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 02:39:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:35,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:35,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:35,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:35,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:35,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:35,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:35,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:35,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:35,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:35,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:35,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-14 02:39:35,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:35,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:36,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:36,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:39:36,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 02:39:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:36,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 02:39:36,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:36,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537964284] [2020-10-14 02:39:36,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:36,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:36,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74919413] [2020-10-14 02:39:36,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:36,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:36,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:36,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:36,400 INFO L87 Difference]: Start difference. First operand 5314 states and 6630 transitions. Second operand 7 states. [2020-10-14 02:39:40,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:40,513 INFO L93 Difference]: Finished difference Result 10224 states and 12844 transitions. [2020-10-14 02:39:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:39:40,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-14 02:39:40,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:40,562 INFO L225 Difference]: With dead ends: 10224 [2020-10-14 02:39:40,562 INFO L226 Difference]: Without dead ends: 7220 [2020-10-14 02:39:40,570 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 [2020-10-14 02:39:40,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2020-10-14 02:39:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 6074. [2020-10-14 02:39:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6074 states. [2020-10-14 02:39:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6074 states to 6074 states and 7391 transitions. [2020-10-14 02:39:40,714 INFO L78 Accepts]: Start accepts. Automaton has 6074 states and 7391 transitions. Word has length 258 [2020-10-14 02:39:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:40,715 INFO L479 AbstractCegarLoop]: Abstraction has 6074 states and 7391 transitions. [2020-10-14 02:39:40,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6074 states and 7391 transitions. [2020-10-14 02:39:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 02:39:40,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:40,721 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:40,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:39:40,722 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:40,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1542481240, now seen corresponding path program 1 times [2020-10-14 02:39:40,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:40,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416207596] [2020-10-14 02:39:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:40,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:42,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:42,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 02:39:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:39:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1754 [2020-10-14 02:39:42,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:42,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-14 02:39:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 02:39:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:42,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:42,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:42,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:42,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:42,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:42,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:42,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:42,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:42,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:42,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:42,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:42,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:42,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:42,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 02:39:42,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:42,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:42,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:42,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:43,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:43,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 02:39:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 02:39:43,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:43,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 02:39:43,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 02:39:43,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416207596] [2020-10-14 02:39:43,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:43,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:39:43,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599459835] [2020-10-14 02:39:43,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:39:43,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:43,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:39:43,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:39:43,099 INFO L87 Difference]: Start difference. First operand 6074 states and 7391 transitions. Second operand 5 states. [2020-10-14 02:39:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:45,406 INFO L93 Difference]: Finished difference Result 11747 states and 14609 transitions. [2020-10-14 02:39:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:39:45,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-14 02:39:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:45,435 INFO L225 Difference]: With dead ends: 11747 [2020-10-14 02:39:45,435 INFO L226 Difference]: Without dead ends: 7983 [2020-10-14 02:39:45,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:39:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7983 states. [2020-10-14 02:39:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7983 to 7395. [2020-10-14 02:39:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7395 states. [2020-10-14 02:39:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7395 states to 7395 states and 8990 transitions. [2020-10-14 02:39:45,610 INFO L78 Accepts]: Start accepts. Automaton has 7395 states and 8990 transitions. Word has length 260 [2020-10-14 02:39:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:45,610 INFO L479 AbstractCegarLoop]: Abstraction has 7395 states and 8990 transitions. [2020-10-14 02:39:45,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:39:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7395 states and 8990 transitions. [2020-10-14 02:39:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-14 02:39:45,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:45,624 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:45,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 02:39:45,625 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:45,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1563911999, now seen corresponding path program 1 times [2020-10-14 02:39:45,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:45,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757721719] [2020-10-14 02:39:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:46,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:46,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 02:39:46,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-14 02:39:46,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:46,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:46,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:39:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:46,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:39:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:46,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:46,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:46,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:46,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:46,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:39:46,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:46,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:46,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:46,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:46,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:46,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 02:39:46,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:46,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:46,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757721719] [2020-10-14 02:39:46,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:46,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:46,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280443531] [2020-10-14 02:39:46,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:46,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:46,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:46,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:46,654 INFO L87 Difference]: Start difference. First operand 7395 states and 8990 transitions. Second operand 7 states. [2020-10-14 02:39:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:49,188 INFO L93 Difference]: Finished difference Result 12907 states and 15828 transitions. [2020-10-14 02:39:49,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:39:49,189 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-14 02:39:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:49,214 INFO L225 Difference]: With dead ends: 12907 [2020-10-14 02:39:49,214 INFO L226 Difference]: Without dead ends: 7822 [2020-10-14 02:39:49,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2020-10-14 02:39:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 7793. [2020-10-14 02:39:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7793 states. [2020-10-14 02:39:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 9490 transitions. [2020-10-14 02:39:49,382 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 9490 transitions. Word has length 263 [2020-10-14 02:39:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:49,382 INFO L479 AbstractCegarLoop]: Abstraction has 7793 states and 9490 transitions. [2020-10-14 02:39:49,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 9490 transitions. [2020-10-14 02:39:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 02:39:49,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:49,390 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:49,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 02:39:49,390 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:49,391 INFO L82 PathProgramCache]: Analyzing trace with hash 525362704, now seen corresponding path program 1 times [2020-10-14 02:39:49,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:49,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375516335] [2020-10-14 02:39:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:49,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:50,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:50,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 02:39:50,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1295 [2020-10-14 02:39:50,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:50,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:39:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 02:39:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:50,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:50,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:50,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:50,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:50,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:50,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:39:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 02:39:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:50,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:39:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:39:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:51,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:51,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:39:51,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 02:39:51,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:51,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:51,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 02:39:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:51,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375516335] [2020-10-14 02:39:51,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:51,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:51,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980955614] [2020-10-14 02:39:51,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:51,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:51,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:51,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:51,300 INFO L87 Difference]: Start difference. First operand 7793 states and 9490 transitions. Second operand 7 states. [2020-10-14 02:39:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:54,307 INFO L93 Difference]: Finished difference Result 19927 states and 25139 transitions. [2020-10-14 02:39:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:39:54,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-14 02:39:54,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:54,355 INFO L225 Difference]: With dead ends: 19927 [2020-10-14 02:39:54,355 INFO L226 Difference]: Without dead ends: 12518 [2020-10-14 02:39:54,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:39:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12518 states. [2020-10-14 02:39:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12518 to 12216. [2020-10-14 02:39:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12216 states. [2020-10-14 02:39:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12216 states to 12216 states and 14818 transitions. [2020-10-14 02:39:54,646 INFO L78 Accepts]: Start accepts. Automaton has 12216 states and 14818 transitions. Word has length 272 [2020-10-14 02:39:54,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:54,646 INFO L479 AbstractCegarLoop]: Abstraction has 12216 states and 14818 transitions. [2020-10-14 02:39:54,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12216 states and 14818 transitions. [2020-10-14 02:39:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 02:39:54,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:54,655 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:54,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 02:39:54,656 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:54,656 INFO L82 PathProgramCache]: Analyzing trace with hash -612030198, now seen corresponding path program 1 times [2020-10-14 02:39:54,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:54,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460803809] [2020-10-14 02:39:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:56,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:56,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 02:39:56,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:39:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-14 02:39:56,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:56,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-14 02:39:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:39:56,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:39:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:56,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:39:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:39:56,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:56,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:39:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:39:56,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:39:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:56,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:56,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:56,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:39:56,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 02:39:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:56,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:39:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:39:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 02:39:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:39:56,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:39:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:56,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:39:56,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:39:56,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:39:56,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:39:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 02:39:56,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:39:56,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:39:56,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:39:56,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:39:56,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:39:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:39:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:39:56,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460803809] [2020-10-14 02:39:56,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:39:56,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:39:56,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203312811] [2020-10-14 02:39:56,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:39:56,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:39:56,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:39:56,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:39:56,754 INFO L87 Difference]: Start difference. First operand 12216 states and 14818 transitions. Second operand 7 states. [2020-10-14 02:39:59,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:39:59,563 INFO L93 Difference]: Finished difference Result 21955 states and 26693 transitions. [2020-10-14 02:39:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:39:59,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-14 02:39:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:39:59,602 INFO L225 Difference]: With dead ends: 21955 [2020-10-14 02:39:59,602 INFO L226 Difference]: Without dead ends: 12815 [2020-10-14 02:39:59,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:39:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2020-10-14 02:39:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 12410. [2020-10-14 02:39:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12410 states. [2020-10-14 02:39:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12410 states to 12410 states and 14952 transitions. [2020-10-14 02:39:59,876 INFO L78 Accepts]: Start accepts. Automaton has 12410 states and 14952 transitions. Word has length 279 [2020-10-14 02:39:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:39:59,877 INFO L479 AbstractCegarLoop]: Abstraction has 12410 states and 14952 transitions. [2020-10-14 02:39:59,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:39:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12410 states and 14952 transitions. [2020-10-14 02:39:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-14 02:39:59,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:39:59,890 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:39:59,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 02:39:59,891 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:39:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:39:59,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1610789941, now seen corresponding path program 1 times [2020-10-14 02:39:59,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:39:59,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311364744] [2020-10-14 02:39:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:39:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:39:59,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:03,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:03,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-14 02:40:03,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3109 [2020-10-14 02:40:03,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:03,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:40:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:40:03,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-14 02:40:03,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:03,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:03,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:03,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:03,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:03,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:40:03,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:03,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:03,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:03,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:40:03,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:03,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:03,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:03,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:40:03,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 02:40:03,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:03,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:03,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:03,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 02:40:03,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-14 02:40:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:03,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:03,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:03,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:03,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 02:40:03,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:03,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 02:40:04,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311364744] [2020-10-14 02:40:04,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:04,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:40:04,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206402732] [2020-10-14 02:40:04,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:04,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:04,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:04,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:04,224 INFO L87 Difference]: Start difference. First operand 12410 states and 14952 transitions. Second operand 7 states. [2020-10-14 02:40:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:07,082 INFO L93 Difference]: Finished difference Result 25817 states and 31149 transitions. [2020-10-14 02:40:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:07,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-14 02:40:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:07,115 INFO L225 Difference]: With dead ends: 25817 [2020-10-14 02:40:07,115 INFO L226 Difference]: Without dead ends: 13023 [2020-10-14 02:40:07,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13023 states. [2020-10-14 02:40:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13023 to 12618. [2020-10-14 02:40:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12618 states. [2020-10-14 02:40:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 14857 transitions. [2020-10-14 02:40:07,361 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 14857 transitions. Word has length 291 [2020-10-14 02:40:07,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:07,362 INFO L479 AbstractCegarLoop]: Abstraction has 12618 states and 14857 transitions. [2020-10-14 02:40:07,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:07,362 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 14857 transitions. [2020-10-14 02:40:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-14 02:40:07,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:07,380 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:07,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 02:40:07,380 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:07,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:07,381 INFO L82 PathProgramCache]: Analyzing trace with hash 175710805, now seen corresponding path program 1 times [2020-10-14 02:40:07,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:07,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662242923] [2020-10-14 02:40:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:07,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:07,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:09,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:09,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-14 02:40:09,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2520 [2020-10-14 02:40:09,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:09,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 02:40:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 02:40:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:10,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:10,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:10,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:10,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:10,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:10,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:10,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:10,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:10,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:40:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:40:10,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:10,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:10,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:40:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 02:40:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 02:40:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:10,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:10,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 02:40:10,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 02:40:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:10,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 02:40:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 02:40:10,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662242923] [2020-10-14 02:40:10,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:10,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:10,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647786015] [2020-10-14 02:40:10,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:10,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:10,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:10,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:10,372 INFO L87 Difference]: Start difference. First operand 12618 states and 14857 transitions. Second operand 7 states. [2020-10-14 02:40:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:13,625 INFO L93 Difference]: Finished difference Result 22178 states and 26252 transitions. [2020-10-14 02:40:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:40:13,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-14 02:40:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:13,656 INFO L225 Difference]: With dead ends: 22178 [2020-10-14 02:40:13,656 INFO L226 Difference]: Without dead ends: 13216 [2020-10-14 02:40:13,670 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 [2020-10-14 02:40:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13216 states. [2020-10-14 02:40:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13216 to 12810. [2020-10-14 02:40:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12810 states. [2020-10-14 02:40:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12810 states to 12810 states and 15072 transitions. [2020-10-14 02:40:13,913 INFO L78 Accepts]: Start accepts. Automaton has 12810 states and 15072 transitions. Word has length 327 [2020-10-14 02:40:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:13,915 INFO L479 AbstractCegarLoop]: Abstraction has 12810 states and 15072 transitions. [2020-10-14 02:40:13,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 12810 states and 15072 transitions. [2020-10-14 02:40:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-14 02:40:13,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:13,928 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:13,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 02:40:13,929 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash -309624387, now seen corresponding path program 1 times [2020-10-14 02:40:13,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:13,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973641911] [2020-10-14 02:40:13,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:15,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:15,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 02:40:15,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-14 02:40:15,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:15,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 02:40:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:40:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:15,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:15,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:15,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:15,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:15,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:15,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:15,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:15,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:15,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:15,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:15,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:40:15,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:15,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:40:15,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:15,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:15,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:15,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:15,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:40:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:16,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:16,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:40:16,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 02:40:16,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:16,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:16,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 02:40:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-14 02:40:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:16,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:40:16,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:16,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 02:40:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:16,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 02:40:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 180 proven. 85 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 02:40:16,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973641911] [2020-10-14 02:40:16,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:16,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:16,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339250416] [2020-10-14 02:40:16,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:16,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:16,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:16,247 INFO L87 Difference]: Start difference. First operand 12810 states and 15072 transitions. Second operand 7 states. [2020-10-14 02:40:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:19,141 INFO L93 Difference]: Finished difference Result 28517 states and 33714 transitions. [2020-10-14 02:40:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:40:19,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-14 02:40:19,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:19,175 INFO L225 Difference]: With dead ends: 28517 [2020-10-14 02:40:19,175 INFO L226 Difference]: Without dead ends: 16091 [2020-10-14 02:40:19,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16091 states. [2020-10-14 02:40:19,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16091 to 14929. [2020-10-14 02:40:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14929 states. [2020-10-14 02:40:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14929 states to 14929 states and 17406 transitions. [2020-10-14 02:40:19,433 INFO L78 Accepts]: Start accepts. Automaton has 14929 states and 17406 transitions. Word has length 343 [2020-10-14 02:40:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:19,434 INFO L479 AbstractCegarLoop]: Abstraction has 14929 states and 17406 transitions. [2020-10-14 02:40:19,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:19,434 INFO L276 IsEmpty]: Start isEmpty. Operand 14929 states and 17406 transitions. [2020-10-14 02:40:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 02:40:19,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:19,447 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:40:19,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 02:40:19,447 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:19,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:19,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1466353770, now seen corresponding path program 1 times [2020-10-14 02:40:19,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:19,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881937064] [2020-10-14 02:40:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-14 02:40:21,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-10-14 02:40:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 02:40:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 02:40:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 02:40:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:21,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:21,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:21,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:21,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:21,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:21,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:21,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:21,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:22,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:22,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:22,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:22,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 02:40:22,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:22,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 02:40:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:40:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:22,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:40:22,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 02:40:22,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:22,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:40:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 02:40:22,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 159 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:40:22,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881937064] [2020-10-14 02:40:22,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:22,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 02:40:22,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526399691] [2020-10-14 02:40:22,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 02:40:22,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:22,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 02:40:22,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 02:40:22,643 INFO L87 Difference]: Start difference. First operand 14929 states and 17406 transitions. Second operand 9 states. [2020-10-14 02:40:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:28,220 INFO L93 Difference]: Finished difference Result 25977 states and 30733 transitions. [2020-10-14 02:40:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 02:40:28,222 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 344 [2020-10-14 02:40:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:28,281 INFO L225 Difference]: With dead ends: 25977 [2020-10-14 02:40:28,282 INFO L226 Difference]: Without dead ends: 25975 [2020-10-14 02:40:28,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:40:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25975 states. [2020-10-14 02:40:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25975 to 23037. [2020-10-14 02:40:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23037 states. [2020-10-14 02:40:28,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23037 states to 23037 states and 27131 transitions. [2020-10-14 02:40:28,686 INFO L78 Accepts]: Start accepts. Automaton has 23037 states and 27131 transitions. Word has length 344 [2020-10-14 02:40:28,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:28,687 INFO L479 AbstractCegarLoop]: Abstraction has 23037 states and 27131 transitions. [2020-10-14 02:40:28,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 02:40:28,687 INFO L276 IsEmpty]: Start isEmpty. Operand 23037 states and 27131 transitions. [2020-10-14 02:40:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 02:40:28,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:28,702 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:28,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 02:40:28,703 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:28,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1915862901, now seen corresponding path program 1 times [2020-10-14 02:40:28,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:28,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297610170] [2020-10-14 02:40:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:29,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:29,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-14 02:40:29,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:40:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-10-14 02:40:29,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:29,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 02:40:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:40:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:29,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:29,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:29,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:29,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:29,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:29,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:29,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:40:30,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:40:30,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:30,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:40:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:40:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 02:40:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:30,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:30,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 02:40:30,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297610170] [2020-10-14 02:40:30,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:30,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:30,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933020839] [2020-10-14 02:40:30,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:30,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:30,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:30,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:30,528 INFO L87 Difference]: Start difference. First operand 23037 states and 27131 transitions. Second operand 7 states. [2020-10-14 02:40:33,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:33,464 INFO L93 Difference]: Finished difference Result 42470 states and 50164 transitions. [2020-10-14 02:40:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:40:33,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 359 [2020-10-14 02:40:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:33,506 INFO L225 Difference]: With dead ends: 42470 [2020-10-14 02:40:33,506 INFO L226 Difference]: Without dead ends: 21945 [2020-10-14 02:40:33,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:33,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21945 states. [2020-10-14 02:40:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21945 to 21889. [2020-10-14 02:40:33,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21889 states. [2020-10-14 02:40:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21889 states to 21889 states and 25624 transitions. [2020-10-14 02:40:34,012 INFO L78 Accepts]: Start accepts. Automaton has 21889 states and 25624 transitions. Word has length 359 [2020-10-14 02:40:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:34,013 INFO L479 AbstractCegarLoop]: Abstraction has 21889 states and 25624 transitions. [2020-10-14 02:40:34,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 21889 states and 25624 transitions. [2020-10-14 02:40:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-14 02:40:34,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:34,027 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:34,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 02:40:34,028 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1067334309, now seen corresponding path program 1 times [2020-10-14 02:40:34,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:34,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920822265] [2020-10-14 02:40:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-14 02:40:35,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-10-14 02:40:35,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:40:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:40:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:35,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:40:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 02:40:35,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:40:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:35,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:40:35,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-14 02:40:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:35,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:35,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:35,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:35,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:35,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:40:35,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:35,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:40:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:35,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 201 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 02:40:35,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920822265] [2020-10-14 02:40:35,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:35,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:35,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702842922] [2020-10-14 02:40:35,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:35,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:35,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:35,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:35,706 INFO L87 Difference]: Start difference. First operand 21889 states and 25624 transitions. Second operand 7 states. [2020-10-14 02:40:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:38,968 INFO L93 Difference]: Finished difference Result 44727 states and 52426 transitions. [2020-10-14 02:40:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:40:38,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-14 02:40:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:39,013 INFO L225 Difference]: With dead ends: 44727 [2020-10-14 02:40:39,014 INFO L226 Difference]: Without dead ends: 26494 [2020-10-14 02:40:39,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:40:39,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26494 states. [2020-10-14 02:40:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26494 to 25097. [2020-10-14 02:40:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25097 states. [2020-10-14 02:40:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25097 states to 25097 states and 29117 transitions. [2020-10-14 02:40:39,389 INFO L78 Accepts]: Start accepts. Automaton has 25097 states and 29117 transitions. Word has length 370 [2020-10-14 02:40:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:39,390 INFO L479 AbstractCegarLoop]: Abstraction has 25097 states and 29117 transitions. [2020-10-14 02:40:39,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 25097 states and 29117 transitions. [2020-10-14 02:40:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-14 02:40:39,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:39,401 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, 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, 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] [2020-10-14 02:40:39,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 02:40:39,402 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:39,402 INFO L82 PathProgramCache]: Analyzing trace with hash -951567919, now seen corresponding path program 1 times [2020-10-14 02:40:39,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:39,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771610257] [2020-10-14 02:40:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-14 02:40:41,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:40:41,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-10-14 02:40:41,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-14 02:40:41,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 02:40:41,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:41,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:41,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:41,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:41,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:41,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:40:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:40:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:42,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:42,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:42,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:40:42,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:42,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:40:42,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:42,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:42,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:42,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:40:42,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-14 02:40:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:42,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:42,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:42,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:42,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 02:40:42,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:42,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 02:40:42,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 205 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-14 02:40:42,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771610257] [2020-10-14 02:40:42,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:42,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:42,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133271332] [2020-10-14 02:40:42,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:42,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:42,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:42,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:42,282 INFO L87 Difference]: Start difference. First operand 25097 states and 29117 transitions. Second operand 7 states. [2020-10-14 02:40:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:45,901 INFO L93 Difference]: Finished difference Result 48466 states and 56317 transitions. [2020-10-14 02:40:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:45,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-14 02:40:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:45,937 INFO L225 Difference]: With dead ends: 48466 [2020-10-14 02:40:45,937 INFO L226 Difference]: Without dead ends: 23753 [2020-10-14 02:40:45,959 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 [2020-10-14 02:40:45,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23753 states. [2020-10-14 02:40:46,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23753 to 22385. [2020-10-14 02:40:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22385 states. [2020-10-14 02:40:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22385 states to 22385 states and 25699 transitions. [2020-10-14 02:40:46,484 INFO L78 Accepts]: Start accepts. Automaton has 22385 states and 25699 transitions. Word has length 376 [2020-10-14 02:40:46,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:46,485 INFO L479 AbstractCegarLoop]: Abstraction has 22385 states and 25699 transitions. [2020-10-14 02:40:46,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 22385 states and 25699 transitions. [2020-10-14 02:40:46,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-14 02:40:46,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:46,492 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, 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, 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] [2020-10-14 02:40:46,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 02:40:46,493 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:46,493 INFO L82 PathProgramCache]: Analyzing trace with hash 360066335, now seen corresponding path program 1 times [2020-10-14 02:40:46,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:46,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200643948] [2020-10-14 02:40:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:46,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:46,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-14 02:40:46,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:46,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-14 02:40:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:46,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-14 02:40:46,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:40:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:46,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:46,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:46,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:46,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:46,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:46,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:40:46,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:46,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:46,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:46,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:47,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:47,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:40:47,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:47,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 02:40:47,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:47,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:47,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:40:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:47,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:47,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:47,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:47,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:40:47,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:47,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:47,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:47,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:40:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:47,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:40:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:47,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:40:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-14 02:40:47,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200643948] [2020-10-14 02:40:47,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:47,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:40:47,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661632472] [2020-10-14 02:40:47,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:40:47,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:47,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:40:47,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:40:47,336 INFO L87 Difference]: Start difference. First operand 22385 states and 25699 transitions. Second operand 7 states. [2020-10-14 02:40:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:50,482 INFO L93 Difference]: Finished difference Result 45039 states and 51672 transitions. [2020-10-14 02:40:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:40:50,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-10-14 02:40:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:50,522 INFO L225 Difference]: With dead ends: 45039 [2020-10-14 02:40:50,522 INFO L226 Difference]: Without dead ends: 23038 [2020-10-14 02:40:50,546 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 [2020-10-14 02:40:50,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23038 states. [2020-10-14 02:40:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23038 to 22029. [2020-10-14 02:40:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22029 states. [2020-10-14 02:40:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22029 states to 22029 states and 25060 transitions. [2020-10-14 02:40:50,827 INFO L78 Accepts]: Start accepts. Automaton has 22029 states and 25060 transitions. Word has length 379 [2020-10-14 02:40:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:50,827 INFO L479 AbstractCegarLoop]: Abstraction has 22029 states and 25060 transitions. [2020-10-14 02:40:50,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:40:50,827 INFO L276 IsEmpty]: Start isEmpty. Operand 22029 states and 25060 transitions. [2020-10-14 02:40:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-14 02:40:50,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:50,839 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:40:50,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 02:40:50,839 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:50,839 INFO L82 PathProgramCache]: Analyzing trace with hash 873177375, now seen corresponding path program 1 times [2020-10-14 02:40:50,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:50,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484215247] [2020-10-14 02:40:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:52,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:52,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-14 02:40:52,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:40:52,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1987 [2020-10-14 02:40:52,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:52,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:40:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-10-14 02:40:52,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 02:40:52,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:40:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:52,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:40:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:53,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:53,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:40:53,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:53,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 02:40:53,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:53,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:53,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:53,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:53,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:40:53,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-14 02:40:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:53,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:40:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 02:40:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:53,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:40:53,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 02:40:53,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:40:53,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 02:40:53,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:40:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:40:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:40:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:40:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 02:40:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:40:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-14 02:40:53,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484215247] [2020-10-14 02:40:53,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:40:53,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:40:53,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909893868] [2020-10-14 02:40:53,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:40:53,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:40:53,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:40:53,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:40:53,359 INFO L87 Difference]: Start difference. First operand 22029 states and 25060 transitions. Second operand 5 states. [2020-10-14 02:40:55,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:40:55,589 INFO L93 Difference]: Finished difference Result 44836 states and 51011 transitions. [2020-10-14 02:40:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:40:55,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 445 [2020-10-14 02:40:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:40:55,626 INFO L225 Difference]: With dead ends: 44836 [2020-10-14 02:40:55,626 INFO L226 Difference]: Without dead ends: 22997 [2020-10-14 02:40:55,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:40:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22997 states. [2020-10-14 02:40:55,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22997 to 22567. [2020-10-14 02:40:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22567 states. [2020-10-14 02:40:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22567 states to 22567 states and 25397 transitions. [2020-10-14 02:40:55,972 INFO L78 Accepts]: Start accepts. Automaton has 22567 states and 25397 transitions. Word has length 445 [2020-10-14 02:40:55,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:40:55,973 INFO L479 AbstractCegarLoop]: Abstraction has 22567 states and 25397 transitions. [2020-10-14 02:40:55,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:40:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 22567 states and 25397 transitions. [2020-10-14 02:40:55,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-14 02:40:55,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:40:55,999 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:40:55,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 02:40:55,999 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:40:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:40:56,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1626268719, now seen corresponding path program 1 times [2020-10-14 02:40:56,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:40:56,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986282054] [2020-10-14 02:40:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:40:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:40:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:40:57,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-14 02:41:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4671 [2020-10-14 02:41:01,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-14 02:41:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:41:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:01,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:01,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:01,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:41:01,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:41:01,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:41:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 02:41:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:01,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-14 02:41:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:01,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:01,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:41:01,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:01,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 02:41:01,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:01,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:41:01,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-14 02:41:02,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986282054] [2020-10-14 02:41:02,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:02,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:02,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492591179] [2020-10-14 02:41:02,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:02,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:02,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:02,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:02,035 INFO L87 Difference]: Start difference. First operand 22567 states and 25397 transitions. Second operand 7 states. [2020-10-14 02:41:05,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:05,181 INFO L93 Difference]: Finished difference Result 42340 states and 47765 transitions. [2020-10-14 02:41:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:41:05,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-14 02:41:05,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:05,215 INFO L225 Difference]: With dead ends: 42340 [2020-10-14 02:41:05,215 INFO L226 Difference]: Without dead ends: 22083 [2020-10-14 02:41:05,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:41:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22083 states. [2020-10-14 02:41:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22083 to 21987. [2020-10-14 02:41:05,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21987 states. [2020-10-14 02:41:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21987 states to 21987 states and 24680 transitions. [2020-10-14 02:41:05,545 INFO L78 Accepts]: Start accepts. Automaton has 21987 states and 24680 transitions. Word has length 445 [2020-10-14 02:41:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:05,545 INFO L479 AbstractCegarLoop]: Abstraction has 21987 states and 24680 transitions. [2020-10-14 02:41:05,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 21987 states and 24680 transitions. [2020-10-14 02:41:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-14 02:41:05,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:05,557 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:41:05,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 02:41:05,558 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:05,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:05,558 INFO L82 PathProgramCache]: Analyzing trace with hash -259093931, now seen corresponding path program 1 times [2020-10-14 02:41:05,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:05,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272299856] [2020-10-14 02:41:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:05,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 476 [2020-10-14 02:41:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3668 [2020-10-14 02:41:09,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:41:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 342 [2020-10-14 02:41:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 02:41:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:41:09,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 02:41:09,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:41:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:09,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:09,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:41:09,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 02:41:09,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:09,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 02:41:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:09,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-14 02:41:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:10,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:10,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:41:10,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 02:41:10,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:41:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:41:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 246 proven. 36 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-14 02:41:10,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272299856] [2020-10-14 02:41:10,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:10,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:41:10,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231191577] [2020-10-14 02:41:10,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:41:10,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:10,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:41:10,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:41:10,250 INFO L87 Difference]: Start difference. First operand 21987 states and 24680 transitions. Second operand 8 states. [2020-10-14 02:41:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:16,278 INFO L93 Difference]: Finished difference Result 43860 states and 49423 transitions. [2020-10-14 02:41:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 02:41:16,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 462 [2020-10-14 02:41:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:16,332 INFO L225 Difference]: With dead ends: 43860 [2020-10-14 02:41:16,332 INFO L226 Difference]: Without dead ends: 24949 [2020-10-14 02:41:16,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-14 02:41:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24949 states. [2020-10-14 02:41:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24949 to 23529. [2020-10-14 02:41:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23529 states. [2020-10-14 02:41:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23529 states to 23529 states and 26394 transitions. [2020-10-14 02:41:16,631 INFO L78 Accepts]: Start accepts. Automaton has 23529 states and 26394 transitions. Word has length 462 [2020-10-14 02:41:16,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:16,631 INFO L479 AbstractCegarLoop]: Abstraction has 23529 states and 26394 transitions. [2020-10-14 02:41:16,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:41:16,631 INFO L276 IsEmpty]: Start isEmpty. Operand 23529 states and 26394 transitions. [2020-10-14 02:41:16,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-10-14 02:41:16,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:16,641 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-14 02:41:16,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 02:41:16,642 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:16,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1453724843, now seen corresponding path program 1 times [2020-10-14 02:41:16,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:16,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567908197] [2020-10-14 02:41:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:16,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:17,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:19,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:21,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-14 02:41:21,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:41:21,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 02:41:21,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:21,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 370 [2020-10-14 02:41:21,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 02:41:21,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:21,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:21,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:21,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:21,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:21,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 02:41:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 02:41:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:21,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-14 02:41:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:21,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:21,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:21,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 02:41:21,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:41:21,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:21,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:21,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-14 02:41:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:21,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:22,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:22,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:41:22,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 02:41:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:22,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:41:22,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-14 02:41:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:22,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:22,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:41:22,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:22,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-14 02:41:22,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:22,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:22,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:41:22,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-10-14 02:41:23,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567908197] [2020-10-14 02:41:23,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:23,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:23,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322842430] [2020-10-14 02:41:23,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:23,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:23,046 INFO L87 Difference]: Start difference. First operand 23529 states and 26394 transitions. Second operand 7 states. [2020-10-14 02:41:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:27,228 INFO L93 Difference]: Finished difference Result 48429 states and 54212 transitions. [2020-10-14 02:41:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:41:27,229 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 488 [2020-10-14 02:41:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:27,268 INFO L225 Difference]: With dead ends: 48429 [2020-10-14 02:41:27,268 INFO L226 Difference]: Without dead ends: 25096 [2020-10-14 02:41:27,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25096 states. [2020-10-14 02:41:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25096 to 24097. [2020-10-14 02:41:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24097 states. [2020-10-14 02:41:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24097 states to 24097 states and 26821 transitions. [2020-10-14 02:41:27,566 INFO L78 Accepts]: Start accepts. Automaton has 24097 states and 26821 transitions. Word has length 488 [2020-10-14 02:41:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:27,567 INFO L479 AbstractCegarLoop]: Abstraction has 24097 states and 26821 transitions. [2020-10-14 02:41:27,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:27,567 INFO L276 IsEmpty]: Start isEmpty. Operand 24097 states and 26821 transitions. [2020-10-14 02:41:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-14 02:41:27,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:27,582 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:27,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 02:41:27,582 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:27,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1347526501, now seen corresponding path program 1 times [2020-10-14 02:41:27,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:27,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804775377] [2020-10-14 02:41:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:27,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:28,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-14 02:41:28,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-14 02:41:28,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:28,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 02:41:28,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 02:41:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:28,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:28,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:28,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:28,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:28,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:28,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:28,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:28,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:28,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:28,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:41:28,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:28,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 02:41:28,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:28,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:28,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:28,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:28,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:41:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:29,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 02:41:29,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:29,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 02:41:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:29,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:29,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:29,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:41:29,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 02:41:29,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:29,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 02:41:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-14 02:41:29,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804775377] [2020-10-14 02:41:29,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:29,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:29,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751946853] [2020-10-14 02:41:29,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:29,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:29,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:29,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:29,632 INFO L87 Difference]: Start difference. First operand 24097 states and 26821 transitions. Second operand 7 states. [2020-10-14 02:41:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:33,024 INFO L93 Difference]: Finished difference Result 44797 states and 49960 transitions. [2020-10-14 02:41:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:41:33,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-14 02:41:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:33,068 INFO L225 Difference]: With dead ends: 44797 [2020-10-14 02:41:33,068 INFO L226 Difference]: Without dead ends: 23966 [2020-10-14 02:41:33,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 02:41:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23966 states. [2020-10-14 02:41:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23966 to 22955. [2020-10-14 02:41:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22955 states. [2020-10-14 02:41:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22955 states to 22955 states and 25514 transitions. [2020-10-14 02:41:33,365 INFO L78 Accepts]: Start accepts. Automaton has 22955 states and 25514 transitions. Word has length 539 [2020-10-14 02:41:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:33,366 INFO L479 AbstractCegarLoop]: Abstraction has 22955 states and 25514 transitions. [2020-10-14 02:41:33,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:33,366 INFO L276 IsEmpty]: Start isEmpty. Operand 22955 states and 25514 transitions. [2020-10-14 02:41:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-14 02:41:33,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:33,389 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:41:33,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 02:41:33,390 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:33,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1373660364, now seen corresponding path program 1 times [2020-10-14 02:41:33,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:33,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269813659] [2020-10-14 02:41:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:36,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:36,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-10-14 02:41:36,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:41:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2805 [2020-10-14 02:41:36,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:36,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:41:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-14 02:41:36,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-14 02:41:36,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:36,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:36,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:36,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:36,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:36,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:41:36,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:36,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:36,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:36,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:36,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:41:36,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:41:36,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:36,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:36,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:36,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:41:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:36,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:36,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:41:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 02:41:36,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:36,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-14 02:41:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:36,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-14 02:41:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:36,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:36,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 02:41:36,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 02:41:36,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:36,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:41:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 02:41:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-14 02:41:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:36,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:36,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:36,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 02:41:36,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:41:36,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:36,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 02:41:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 533 proven. 93 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-14 02:41:37,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269813659] [2020-10-14 02:41:37,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:37,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 02:41:37,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120037503] [2020-10-14 02:41:37,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 02:41:37,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 02:41:37,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:41:37,266 INFO L87 Difference]: Start difference. First operand 22955 states and 25514 transitions. Second operand 10 states. [2020-10-14 02:41:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:42,297 INFO L93 Difference]: Finished difference Result 43676 states and 48650 transitions. [2020-10-14 02:41:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 02:41:42,299 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 571 [2020-10-14 02:41:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:42,338 INFO L225 Difference]: With dead ends: 43676 [2020-10-14 02:41:42,338 INFO L226 Difference]: Without dead ends: 23987 [2020-10-14 02:41:42,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-14 02:41:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23987 states. [2020-10-14 02:41:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23987 to 22210. [2020-10-14 02:41:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22210 states. [2020-10-14 02:41:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22210 states to 22210 states and 24636 transitions. [2020-10-14 02:41:42,732 INFO L78 Accepts]: Start accepts. Automaton has 22210 states and 24636 transitions. Word has length 571 [2020-10-14 02:41:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:42,733 INFO L479 AbstractCegarLoop]: Abstraction has 22210 states and 24636 transitions. [2020-10-14 02:41:42,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 02:41:42,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22210 states and 24636 transitions. [2020-10-14 02:41:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-14 02:41:42,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:42,757 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-14 02:41:42,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 02:41:42,757 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:42,758 INFO L82 PathProgramCache]: Analyzing trace with hash -386337409, now seen corresponding path program 1 times [2020-10-14 02:41:42,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:42,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050743313] [2020-10-14 02:41:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:43,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:44,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:44,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:44,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 607 [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2137 [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-14 02:41:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:45,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:41:45,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-14 02:41:45,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:41:45,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-14 02:41:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-14 02:41:45,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 02:41:45,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:41:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-14 02:41:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:41:45,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:45,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 02:41:45,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 02:41:45,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-14 02:41:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:45,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:41:45,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:41:45,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 02:41:45,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:45,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:45,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 02:41:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 131 proven. 8 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-14 02:41:45,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050743313] [2020-10-14 02:41:45,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:45,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:41:45,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847866037] [2020-10-14 02:41:45,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:41:45,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:45,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:41:45,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:41:45,883 INFO L87 Difference]: Start difference. First operand 22210 states and 24636 transitions. Second operand 5 states. [2020-10-14 02:41:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:48,580 INFO L93 Difference]: Finished difference Result 42902 states and 47698 transitions. [2020-10-14 02:41:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:41:48,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 591 [2020-10-14 02:41:48,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:48,612 INFO L225 Difference]: With dead ends: 42902 [2020-10-14 02:41:48,612 INFO L226 Difference]: Without dead ends: 21285 [2020-10-14 02:41:48,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:41:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21285 states. [2020-10-14 02:41:48,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21285 to 21225. [2020-10-14 02:41:48,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21225 states. [2020-10-14 02:41:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21225 states to 21225 states and 23498 transitions. [2020-10-14 02:41:48,865 INFO L78 Accepts]: Start accepts. Automaton has 21225 states and 23498 transitions. Word has length 591 [2020-10-14 02:41:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:48,865 INFO L479 AbstractCegarLoop]: Abstraction has 21225 states and 23498 transitions. [2020-10-14 02:41:48,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:41:48,865 INFO L276 IsEmpty]: Start isEmpty. Operand 21225 states and 23498 transitions. [2020-10-14 02:41:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-14 02:41:48,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:48,883 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, 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, 5, 5, 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, 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] [2020-10-14 02:41:48,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 02:41:48,883 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:48,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1808354104, now seen corresponding path program 1 times [2020-10-14 02:41:48,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:48,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038217294] [2020-10-14 02:41:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:49,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:50,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:53,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 652 [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 347 [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 02:41:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:54,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:54,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:54,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 02:41:54,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:54,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:54,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:41:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:54,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:54,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 02:41:54,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:54,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 02:41:54,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:54,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-14 02:41:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:54,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:54,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 02:41:54,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:54,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 02:41:54,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:54,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-14 02:41:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:54,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:54,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:54,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:41:54,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-14 02:41:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:54,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:54,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:54,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:41:54,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:41:54,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:54,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:41:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:41:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 02:41:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:54,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-10-14 02:41:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:54,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:54,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:54,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:41:54,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 02:41:54,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:54,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:41:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 02:41:54,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:41:54,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:41:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 430 proven. 87 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2020-10-14 02:41:54,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038217294] [2020-10-14 02:41:54,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:41:54,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:41:54,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431973613] [2020-10-14 02:41:54,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:41:54,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:54,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:41:54,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:41:54,877 INFO L87 Difference]: Start difference. First operand 21225 states and 23498 transitions. Second operand 7 states. [2020-10-14 02:41:58,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:41:58,539 INFO L93 Difference]: Finished difference Result 40628 states and 45204 transitions. [2020-10-14 02:41:58,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:41:58,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 634 [2020-10-14 02:41:58,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:41:58,574 INFO L225 Difference]: With dead ends: 40628 [2020-10-14 02:41:58,574 INFO L226 Difference]: Without dead ends: 20941 [2020-10-14 02:41:58,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:41:58,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20941 states. [2020-10-14 02:41:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20941 to 20045. [2020-10-14 02:41:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20045 states. [2020-10-14 02:41:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20045 states to 20045 states and 21991 transitions. [2020-10-14 02:41:58,826 INFO L78 Accepts]: Start accepts. Automaton has 20045 states and 21991 transitions. Word has length 634 [2020-10-14 02:41:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:41:58,827 INFO L479 AbstractCegarLoop]: Abstraction has 20045 states and 21991 transitions. [2020-10-14 02:41:58,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:41:58,827 INFO L276 IsEmpty]: Start isEmpty. Operand 20045 states and 21991 transitions. [2020-10-14 02:41:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-14 02:41:58,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:58,842 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:58,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 02:41:58,843 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:58,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash 247617597, now seen corresponding path program 1 times [2020-10-14 02:41:58,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:58,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079313478] [2020-10-14 02:41:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:03,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:03,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 651 [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 436 [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 02:42:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:04,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:04,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:04,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:04,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:42:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:04,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:04,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:04,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:04,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:04,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-14 02:42:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:04,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:04,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 02:42:04,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 02:42:04,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:04,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:04,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2020-10-14 02:42:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:04,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:04,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:42:04,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 02:42:04,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:04,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:42:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-14 02:42:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:04,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:04,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 02:42:04,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 02:42:04,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:04,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 02:42:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 02:42:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 516 proven. 33 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2020-10-14 02:42:05,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079313478] [2020-10-14 02:42:05,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:05,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:42:05,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336155931] [2020-10-14 02:42:05,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:42:05,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:05,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:42:05,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:42:05,517 INFO L87 Difference]: Start difference. First operand 20045 states and 21991 transitions. Second operand 8 states. [2020-10-14 02:42:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:10,389 INFO L93 Difference]: Finished difference Result 31317 states and 34412 transitions. [2020-10-14 02:42:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:42:10,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 635 [2020-10-14 02:42:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:10,441 INFO L225 Difference]: With dead ends: 31317 [2020-10-14 02:42:10,441 INFO L226 Difference]: Without dead ends: 31315 [2020-10-14 02:42:10,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:42:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31315 states. [2020-10-14 02:42:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31315 to 29081. [2020-10-14 02:42:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29081 states. [2020-10-14 02:42:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29081 states to 29081 states and 31827 transitions. [2020-10-14 02:42:10,806 INFO L78 Accepts]: Start accepts. Automaton has 29081 states and 31827 transitions. Word has length 635 [2020-10-14 02:42:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:10,807 INFO L479 AbstractCegarLoop]: Abstraction has 29081 states and 31827 transitions. [2020-10-14 02:42:10,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:42:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 29081 states and 31827 transitions. [2020-10-14 02:42:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-10-14 02:42:10,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:10,830 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:42:10,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 02:42:10,830 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:10,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1704264889, now seen corresponding path program 1 times [2020-10-14 02:42:10,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:10,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058555370] [2020-10-14 02:42:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:11,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking...