/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/Problem03_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:47:07,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:47:07,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:47:07,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:47:07,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:47:07,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:47:07,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:47:07,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:47:07,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:47:07,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:47:07,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:47:07,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:47:07,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:47:07,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:47:07,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:47:07,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:47:07,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:47:07,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:47:07,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:47:07,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:47:07,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:47:07,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:47:07,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:47:07,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:47:07,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:47:07,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:47:07,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:47:07,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:47:07,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:47:07,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:47:07,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:47:07,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:47:07,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:47:07,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:47:07,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:47:07,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:47:07,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:47:07,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:47:07,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:47:07,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:47:07,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:47:07,211 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 00:47:07,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:47:07,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:47:07,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:47:07,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:47:07,237 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:47:07,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:47:07,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:47:07,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:47:07,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:47:07,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:47:07,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:47:07,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:47:07,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:47:07,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:47:07,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:47:07,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:47:07,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:47:07,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:47:07,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:47:07,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:47:07,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:47:07,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:47:07,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:47:07,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:47:07,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:47:07,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:47:07,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:47:07,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:47:07,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:47:07,242 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 00:47:07,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:47:07,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:47:07,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:47:07,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:47:07,638 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:47:07,638 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label11.c [2020-10-14 00:47:07,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4ce4a953/50f5a9dd682249bfaec2f3d865184d7c/FLAG81bdb7343 [2020-10-14 00:47:08,336 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:47:08,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label11.c [2020-10-14 00:47:08,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4ce4a953/50f5a9dd682249bfaec2f3d865184d7c/FLAG81bdb7343 [2020-10-14 00:47:08,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4ce4a953/50f5a9dd682249bfaec2f3d865184d7c [2020-10-14 00:47:08,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:47:08,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:47:08,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:47:08,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:47:08,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:47:08,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:47:08" (1/1) ... [2020-10-14 00:47:08,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bbca229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:08, skipping insertion in model container [2020-10-14 00:47:08,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:47:08" (1/1) ... [2020-10-14 00:47:08,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:47:08,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:47:09,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:47:09,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:47:09,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:47:09,945 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:47:09,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09 WrapperNode [2020-10-14 00:47:09,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:47:09,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:47:09,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:47:09,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:47:09,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (1/1) ... [2020-10-14 00:47:09,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (1/1) ... [2020-10-14 00:47:10,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (1/1) ... [2020-10-14 00:47:10,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (1/1) ... [2020-10-14 00:47:10,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (1/1) ... [2020-10-14 00:47:10,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (1/1) ... [2020-10-14 00:47:10,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (1/1) ... [2020-10-14 00:47:10,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:47:10,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:47:10,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:47:10,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:47:10,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (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 00:47:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:47:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:47:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:47:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:47:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:47:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:47:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:47:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:47:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:47:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:47:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:47:12,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:47:12,324 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:47:12,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:47:12 BoogieIcfgContainer [2020-10-14 00:47:12,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:47:12,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:47:12,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:47:12,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:47:12,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:47:08" (1/3) ... [2020-10-14 00:47:12,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba1ed9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:47:12, skipping insertion in model container [2020-10-14 00:47:12,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:47:09" (2/3) ... [2020-10-14 00:47:12,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba1ed9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:47:12, skipping insertion in model container [2020-10-14 00:47:12,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:47:12" (3/3) ... [2020-10-14 00:47:12,340 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label11.c [2020-10-14 00:47:12,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:47:12,360 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:47:12,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:47:12,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:47:12,407 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:47:12,407 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:47:12,407 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:47:12,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:47:12,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:47:12,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:47:12,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:47:12,432 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:47:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 00:47:12,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:12,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:12,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:12,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1907220800, now seen corresponding path program 1 times [2020-10-14 00:47:12,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:12,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585434303] [2020-10-14 00:47:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:13,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:13,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:16,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:16,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 00:47:16,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:16,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3494 [2020-10-14 00:47:16,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:16,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:47:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 00:47:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:47:17,043 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:17,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:17,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:47:17,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:17,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:17,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:17,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:17,189 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 00:47:17,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585434303] [2020-10-14 00:47:17,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:47:17,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:47:17,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422554574] [2020-10-14 00:47:17,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:47:17,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:17,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:47:17,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:47:17,217 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:47:17,440 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:20,465 INFO L93 Difference]: Finished difference Result 884 states and 1536 transitions. [2020-10-14 00:47:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:20,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 199 [2020-10-14 00:47:20,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:20,487 INFO L225 Difference]: With dead ends: 884 [2020-10-14 00:47:20,488 INFO L226 Difference]: Without dead ends: 480 [2020-10-14 00:47:20,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-10-14 00:47:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-10-14 00:47:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-10-14 00:47:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 728 transitions. [2020-10-14 00:47:20,585 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 728 transitions. Word has length 199 [2020-10-14 00:47:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:20,586 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 728 transitions. [2020-10-14 00:47:20,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:47:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 728 transitions. [2020-10-14 00:47:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 00:47:20,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:20,593 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:20,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:47:20,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:20,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:20,594 INFO L82 PathProgramCache]: Analyzing trace with hash 267319107, now seen corresponding path program 1 times [2020-10-14 00:47:20,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:20,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867325871] [2020-10-14 00:47:20,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:21,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:23,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:23,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 00:47:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2955 [2020-10-14 00:47:23,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:23,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 00:47:23,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 00:47:23,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:23,998 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:23,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:24,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:24,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:24,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:47:24,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:24,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:47:24,200 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:47:24,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:24,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:24,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:24,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:47:24,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:24,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:24,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:47:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:24,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867325871] [2020-10-14 00:47:24,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:24,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:24,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439971403] [2020-10-14 00:47:24,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:24,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:24,452 INFO L87 Difference]: Start difference. First operand 475 states and 728 transitions. Second operand 5 states. [2020-10-14 00:47:24,838 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:27,785 INFO L93 Difference]: Finished difference Result 1394 states and 2170 transitions. [2020-10-14 00:47:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:27,787 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-14 00:47:27,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:27,796 INFO L225 Difference]: With dead ends: 1394 [2020-10-14 00:47:27,796 INFO L226 Difference]: Without dead ends: 925 [2020-10-14 00:47:27,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-10-14 00:47:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 903. [2020-10-14 00:47:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-14 00:47:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1371 transitions. [2020-10-14 00:47:27,859 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1371 transitions. Word has length 208 [2020-10-14 00:47:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:27,860 INFO L479 AbstractCegarLoop]: Abstraction has 903 states and 1371 transitions. [2020-10-14 00:47:27,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1371 transitions. [2020-10-14 00:47:27,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 00:47:27,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:27,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:27,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:47:27,869 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:27,870 INFO L82 PathProgramCache]: Analyzing trace with hash 428420692, now seen corresponding path program 1 times [2020-10-14 00:47:27,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:27,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159638182] [2020-10-14 00:47:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:28,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:31,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:31,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-14 00:47:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3616 [2020-10-14 00:47:31,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:31,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:47:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 00:47:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:31,915 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:31,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:31,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:31,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:31,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:47:31,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:31,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:31,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:32,067 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:47:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:32,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:32,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:47:32,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 00:47:32,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:32,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:47:32,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:32,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159638182] [2020-10-14 00:47:32,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:32,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:32,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073314926] [2020-10-14 00:47:32,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:32,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:32,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:32,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:32,253 INFO L87 Difference]: Start difference. First operand 903 states and 1371 transitions. Second operand 5 states. [2020-10-14 00:47:32,742 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:35,725 INFO L93 Difference]: Finished difference Result 2652 states and 4100 transitions. [2020-10-14 00:47:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:35,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 211 [2020-10-14 00:47:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:35,742 INFO L225 Difference]: With dead ends: 2652 [2020-10-14 00:47:35,743 INFO L226 Difference]: Without dead ends: 1755 [2020-10-14 00:47:35,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2020-10-14 00:47:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1744. [2020-10-14 00:47:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1744 states. [2020-10-14 00:47:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2576 transitions. [2020-10-14 00:47:35,829 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2576 transitions. Word has length 211 [2020-10-14 00:47:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:35,830 INFO L479 AbstractCegarLoop]: Abstraction has 1744 states and 2576 transitions. [2020-10-14 00:47:35,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2576 transitions. [2020-10-14 00:47:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 00:47:35,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:35,840 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:35,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:47:35,841 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:35,841 INFO L82 PathProgramCache]: Analyzing trace with hash -970029750, now seen corresponding path program 1 times [2020-10-14 00:47:35,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:35,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859809657] [2020-10-14 00:47:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:36,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:38,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:40,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:40,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-14 00:47:40,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 00:47:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 00:47:40,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:40,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 00:47:40,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 00:47:40,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:41,200 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:41,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:41,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:41,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:41,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:47:41,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:41,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:41,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:41,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:41,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:41,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:41,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:41,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:47:41,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:41,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:41,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:41,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:41,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:41,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:41,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:41,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:47:41,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:41,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:47:41,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:41,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:41,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:47:41,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:47:41,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859809657] [2020-10-14 00:47:41,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:41,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:41,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105992907] [2020-10-14 00:47:41,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:41,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:41,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:41,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:41,476 INFO L87 Difference]: Start difference. First operand 1744 states and 2576 transitions. Second operand 5 states. [2020-10-14 00:47:41,803 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:47:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:44,282 INFO L93 Difference]: Finished difference Result 5164 states and 7694 transitions. [2020-10-14 00:47:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:44,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-14 00:47:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:44,298 INFO L225 Difference]: With dead ends: 5164 [2020-10-14 00:47:44,299 INFO L226 Difference]: Without dead ends: 1747 [2020-10-14 00:47:44,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-14 00:47:44,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1743. [2020-10-14 00:47:44,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1743 states. [2020-10-14 00:47:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2574 transitions. [2020-10-14 00:47:44,358 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2574 transitions. Word has length 218 [2020-10-14 00:47:44,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:44,359 INFO L479 AbstractCegarLoop]: Abstraction has 1743 states and 2574 transitions. [2020-10-14 00:47:44,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2574 transitions. [2020-10-14 00:47:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-14 00:47:44,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:44,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:44,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:47:44,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:44,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:44,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1941887351, now seen corresponding path program 1 times [2020-10-14 00:47:44,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:44,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610031028] [2020-10-14 00:47:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:47,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:47,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-14 00:47:47,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:47:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2775 [2020-10-14 00:47:47,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:47,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:47:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 00:47:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 00:47:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 00:47:47,574 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:47,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:47,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:47,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:47,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:47,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:47:47,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:47,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:47,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:47:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:47:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:47,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:47,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:47,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:47:47,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 00:47:47,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:47,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 00:47:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:47:47,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610031028] [2020-10-14 00:47:47,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:47,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:47:47,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196928469] [2020-10-14 00:47:47,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:47:47,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:47:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:47:47,807 INFO L87 Difference]: Start difference. First operand 1743 states and 2574 transitions. Second operand 5 states. [2020-10-14 00:47:48,078 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:47:50,920 INFO L93 Difference]: Finished difference Result 5159 states and 7813 transitions. [2020-10-14 00:47:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:47:50,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2020-10-14 00:47:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:47:50,940 INFO L225 Difference]: With dead ends: 5159 [2020-10-14 00:47:50,940 INFO L226 Difference]: Without dead ends: 3422 [2020-10-14 00:47:50,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:47:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2020-10-14 00:47:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3415. [2020-10-14 00:47:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3415 states. [2020-10-14 00:47:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3415 states to 3415 states and 5044 transitions. [2020-10-14 00:47:51,044 INFO L78 Accepts]: Start accepts. Automaton has 3415 states and 5044 transitions. Word has length 218 [2020-10-14 00:47:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:47:51,045 INFO L479 AbstractCegarLoop]: Abstraction has 3415 states and 5044 transitions. [2020-10-14 00:47:51,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:47:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3415 states and 5044 transitions. [2020-10-14 00:47:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-14 00:47:51,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:47:51,057 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:47:51,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:47:51,058 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:47:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:47:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2028390680, now seen corresponding path program 1 times [2020-10-14 00:47:51,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:47:51,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84970400] [2020-10-14 00:47:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:47:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:55,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-14 00:47:56,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:47:56,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 00:47:56,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:47:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:47:56,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 00:47:56,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:56,724 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:47:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:47:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:56,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:47:56,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:47:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:47:56,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:47:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:47:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:56,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:56,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:47:56,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:47:56,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:47:56,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:56,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:47:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:56,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:47:56,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 00:47:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:47:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:47:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:47:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 00:47:57,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:47:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 00:47:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:47:57,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:47:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 00:47:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:47:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:47:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:47:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:47:57,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84970400] [2020-10-14 00:47:57,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:47:57,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:47:57,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079035935] [2020-10-14 00:47:57,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:47:57,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:47:57,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:47:57,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:47:57,381 INFO L87 Difference]: Start difference. First operand 3415 states and 5044 transitions. Second operand 7 states. [2020-10-14 00:47:57,557 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:47:58,300 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-14 00:48:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:01,004 INFO L93 Difference]: Finished difference Result 7138 states and 10695 transitions. [2020-10-14 00:48:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:48:01,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-14 00:48:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:01,027 INFO L225 Difference]: With dead ends: 7138 [2020-10-14 00:48:01,027 INFO L226 Difference]: Without dead ends: 3687 [2020-10-14 00:48:01,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:48:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2020-10-14 00:48:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3683. [2020-10-14 00:48:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3683 states. [2020-10-14 00:48:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 5330 transitions. [2020-10-14 00:48:01,185 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 5330 transitions. Word has length 245 [2020-10-14 00:48:01,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:01,185 INFO L479 AbstractCegarLoop]: Abstraction has 3683 states and 5330 transitions. [2020-10-14 00:48:01,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 5330 transitions. [2020-10-14 00:48:01,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 00:48:01,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:01,200 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:01,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:48:01,200 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:01,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1914824806, now seen corresponding path program 1 times [2020-10-14 00:48:01,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:01,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209218736] [2020-10-14 00:48:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:04,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:06,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:06,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 00:48:06,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 00:48:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:06,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-14 00:48:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 00:48:06,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:06,594 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:06,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:06,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:06,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:06,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:06,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:06,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:06,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:06,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:48:06,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:48:06,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:06,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 00:48:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:06,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:48:06,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 00:48:06,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:06,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:48:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 00:48:06,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209218736] [2020-10-14 00:48:06,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:06,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:48:06,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017627367] [2020-10-14 00:48:06,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:48:06,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:06,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:48:06,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:48:06,862 INFO L87 Difference]: Start difference. First operand 3683 states and 5330 transitions. Second operand 5 states. [2020-10-14 00:48:07,106 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:09,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:09,877 INFO L93 Difference]: Finished difference Result 10510 states and 15830 transitions. [2020-10-14 00:48:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:09,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-14 00:48:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:09,912 INFO L225 Difference]: With dead ends: 10510 [2020-10-14 00:48:09,912 INFO L226 Difference]: Without dead ends: 6833 [2020-10-14 00:48:09,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:48:09,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2020-10-14 00:48:10,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 6826. [2020-10-14 00:48:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6826 states. [2020-10-14 00:48:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 9963 transitions. [2020-10-14 00:48:10,149 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 9963 transitions. Word has length 250 [2020-10-14 00:48:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:10,149 INFO L479 AbstractCegarLoop]: Abstraction has 6826 states and 9963 transitions. [2020-10-14 00:48:10,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:48:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 9963 transitions. [2020-10-14 00:48:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 00:48:10,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:10,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:10,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:48:10,174 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:10,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1715985123, now seen corresponding path program 1 times [2020-10-14 00:48:10,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:10,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030609100] [2020-10-14 00:48:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:11,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:12,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:12,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 00:48:12,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:12,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2666 [2020-10-14 00:48:12,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:12,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:12,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:12,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 00:48:12,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 00:48:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:13,131 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:13,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:13,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:13,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:13,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:48:13,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:13,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:13,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:13,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:13,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 00:48:13,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:13,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 00:48:13,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:13,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:13,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 00:48:13,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:48:13,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030609100] [2020-10-14 00:48:13,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:13,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:48:13,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637907127] [2020-10-14 00:48:13,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:48:13,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:48:13,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:48:13,404 INFO L87 Difference]: Start difference. First operand 6826 states and 9963 transitions. Second operand 5 states. [2020-10-14 00:48:13,577 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:16,160 INFO L93 Difference]: Finished difference Result 16785 states and 25053 transitions. [2020-10-14 00:48:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:16,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-14 00:48:16,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:16,204 INFO L225 Difference]: With dead ends: 16785 [2020-10-14 00:48:16,204 INFO L226 Difference]: Without dead ends: 9965 [2020-10-14 00:48:16,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:48:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2020-10-14 00:48:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 9961. [2020-10-14 00:48:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9961 states. [2020-10-14 00:48:16,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 13600 transitions. [2020-10-14 00:48:16,476 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 13600 transitions. Word has length 262 [2020-10-14 00:48:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:16,477 INFO L479 AbstractCegarLoop]: Abstraction has 9961 states and 13600 transitions. [2020-10-14 00:48:16,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:48:16,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 13600 transitions. [2020-10-14 00:48:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 00:48:16,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:16,511 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:16,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:48:16,512 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:16,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1425335502, now seen corresponding path program 1 times [2020-10-14 00:48:16,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:16,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800326321] [2020-10-14 00:48:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:16,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:20,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:21,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:21,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-10-14 00:48:21,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:48:21,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:21,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-14 00:48:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 00:48:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:21,851 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:21,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:21,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:48:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:21,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:21,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:21,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:21,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:21,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:21,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:21,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:21,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:21,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:21,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:21,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 00:48:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:22,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 00:48:22,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:22,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:22,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 00:48:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 00:48:22,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800326321] [2020-10-14 00:48:22,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:22,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:48:22,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324243389] [2020-10-14 00:48:22,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:48:22,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:22,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:48:22,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:48:22,177 INFO L87 Difference]: Start difference. First operand 9961 states and 13600 transitions. Second operand 5 states. [2020-10-14 00:48:22,331 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:48:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:24,607 INFO L93 Difference]: Finished difference Result 27052 states and 37511 transitions. [2020-10-14 00:48:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:48:24,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-14 00:48:24,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:24,681 INFO L225 Difference]: With dead ends: 27052 [2020-10-14 00:48:24,681 INFO L226 Difference]: Without dead ends: 17097 [2020-10-14 00:48:24,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:48:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17097 states. [2020-10-14 00:48:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17097 to 17067. [2020-10-14 00:48:25,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17067 states. [2020-10-14 00:48:25,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17067 states to 17067 states and 23365 transitions. [2020-10-14 00:48:25,313 INFO L78 Accepts]: Start accepts. Automaton has 17067 states and 23365 transitions. Word has length 269 [2020-10-14 00:48:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:25,315 INFO L479 AbstractCegarLoop]: Abstraction has 17067 states and 23365 transitions. [2020-10-14 00:48:25,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:48:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 17067 states and 23365 transitions. [2020-10-14 00:48:25,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 00:48:25,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:25,374 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:25,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:48:25,374 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:25,375 INFO L82 PathProgramCache]: Analyzing trace with hash -702729695, now seen corresponding path program 1 times [2020-10-14 00:48:25,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:25,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673356943] [2020-10-14 00:48:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:30,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 00:48:30,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:48:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 00:48:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:30,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 00:48:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:48:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:30,648 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:30,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:30,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:30,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:30,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:30,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:30,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:30,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:30,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:30,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:30,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:30,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:30,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:30,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:48:30,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 00:48:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:30,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:30,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:48:30,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:30,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 00:48:30,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:30,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:30,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:30,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:30,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:48:30,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:48:31,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673356943] [2020-10-14 00:48:31,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:31,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:31,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983047457] [2020-10-14 00:48:31,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:31,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:31,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:31,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:31,039 INFO L87 Difference]: Start difference. First operand 17067 states and 23365 transitions. Second operand 7 states. [2020-10-14 00:48:31,323 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:31,786 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:34,616 INFO L93 Difference]: Finished difference Result 34449 states and 48960 transitions. [2020-10-14 00:48:34,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:34,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-14 00:48:34,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:34,690 INFO L225 Difference]: With dead ends: 34449 [2020-10-14 00:48:34,690 INFO L226 Difference]: Without dead ends: 17388 [2020-10-14 00:48:34,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17388 states. [2020-10-14 00:48:35,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17388 to 17199. [2020-10-14 00:48:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17199 states. [2020-10-14 00:48:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17199 states to 17199 states and 21986 transitions. [2020-10-14 00:48:35,203 INFO L78 Accepts]: Start accepts. Automaton has 17199 states and 21986 transitions. Word has length 296 [2020-10-14 00:48:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:35,204 INFO L479 AbstractCegarLoop]: Abstraction has 17199 states and 21986 transitions. [2020-10-14 00:48:35,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 17199 states and 21986 transitions. [2020-10-14 00:48:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-14 00:48:35,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:35,264 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:48:35,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:48:35,265 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:35,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:35,265 INFO L82 PathProgramCache]: Analyzing trace with hash -75525075, now seen corresponding path program 1 times [2020-10-14 00:48:35,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:35,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971043449] [2020-10-14 00:48:35,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:35,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:40,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:40,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-14 00:48:40,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:48:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 00:48:40,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:40,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:40,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 00:48:40,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 00:48:40,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:40,643 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:40,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:40,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:40,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:40,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:48:40,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:40,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:48:40,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:40,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:40,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:40,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:48:40,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:40,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:40,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:40,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:40,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:40,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:40,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 00:48:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:40,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:40,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 00:48:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:40,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:48:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:40,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:40,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:48:40,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 00:48:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:40,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:40,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:48:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:48:41,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971043449] [2020-10-14 00:48:41,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:41,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:41,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313348512] [2020-10-14 00:48:41,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:41,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:41,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:41,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:41,145 INFO L87 Difference]: Start difference. First operand 17199 states and 21986 transitions. Second operand 7 states. [2020-10-14 00:48:41,461 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:48:42,868 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:48:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:45,153 INFO L93 Difference]: Finished difference Result 34157 states and 46999 transitions. [2020-10-14 00:48:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:48:45,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-14 00:48:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:45,232 INFO L225 Difference]: With dead ends: 34157 [2020-10-14 00:48:45,232 INFO L226 Difference]: Without dead ends: 16964 [2020-10-14 00:48:45,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:48:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16964 states. [2020-10-14 00:48:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16964 to 16464. [2020-10-14 00:48:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16464 states. [2020-10-14 00:48:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16464 states to 16464 states and 20358 transitions. [2020-10-14 00:48:45,759 INFO L78 Accepts]: Start accepts. Automaton has 16464 states and 20358 transitions. Word has length 306 [2020-10-14 00:48:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:48:45,760 INFO L479 AbstractCegarLoop]: Abstraction has 16464 states and 20358 transitions. [2020-10-14 00:48:45,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:48:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 16464 states and 20358 transitions. [2020-10-14 00:48:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-14 00:48:45,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:48:45,782 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:48:45,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:48:45,782 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:48:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:48:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash 9639377, now seen corresponding path program 1 times [2020-10-14 00:48:45,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:48:45,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272786309] [2020-10-14 00:48:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:48:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:45,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 00:48:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:48:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 00:48:50,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:50,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 00:48:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:48:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:51,056 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:48:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:48:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:51,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:51,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:48:51,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:51,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:48:51,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:51,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:51,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:51,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:48:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:51,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:51,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:48:51,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:48:51,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:51,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:48:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:51,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:51,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:48:51,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:48:51,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:51,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:48:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:48:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 00:48:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:51,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:51,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:51,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:48:51,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:51,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:48:51,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:51,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:48:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:48:51,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:48:51,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-14 00:48:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:48:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:48:51,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:48:51,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:48:51,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:48:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 00:48:51,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:48:51,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:48:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:48:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:48:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:48:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:48:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-14 00:48:51,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272786309] [2020-10-14 00:48:51,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:48:51,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:48:51,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413337937] [2020-10-14 00:48:51,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:48:51,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:48:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:48:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:48:51,633 INFO L87 Difference]: Start difference. First operand 16464 states and 20358 transitions. Second operand 7 states. [2020-10-14 00:48:51,883 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:52,282 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:48:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:48:57,764 INFO L93 Difference]: Finished difference Result 65431 states and 89092 transitions. [2020-10-14 00:48:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:48:57,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2020-10-14 00:48:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:48:57,970 INFO L225 Difference]: With dead ends: 65431 [2020-10-14 00:48:57,971 INFO L226 Difference]: Without dead ends: 48871 [2020-10-14 00:48:58,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:48:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48871 states. [2020-10-14 00:48:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48871 to 44755. [2020-10-14 00:48:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44755 states. [2020-10-14 00:49:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44755 states to 44755 states and 57129 transitions. [2020-10-14 00:49:00,970 INFO L78 Accepts]: Start accepts. Automaton has 44755 states and 57129 transitions. Word has length 322 [2020-10-14 00:49:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:00,971 INFO L479 AbstractCegarLoop]: Abstraction has 44755 states and 57129 transitions. [2020-10-14 00:49:00,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:00,971 INFO L276 IsEmpty]: Start isEmpty. Operand 44755 states and 57129 transitions. [2020-10-14 00:49:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-14 00:49:01,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:01,064 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:01,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:49:01,064 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:01,065 INFO L82 PathProgramCache]: Analyzing trace with hash -509710722, now seen corresponding path program 1 times [2020-10-14 00:49:01,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:01,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522756347] [2020-10-14 00:49:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:04,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:04,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 00:49:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:49:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3402 [2020-10-14 00:49:04,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:04,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:49:04,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:49:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:04,730 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:04,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:04,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:04,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:04,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:04,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:04,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:04,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:49:04,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:49:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:04,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:49:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:49:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:04,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:05,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:49:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 00:49:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:05,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:49:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:49:05,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522756347] [2020-10-14 00:49:05,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:05,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:05,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829783044] [2020-10-14 00:49:05,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:05,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:05,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:05,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:05,204 INFO L87 Difference]: Start difference. First operand 44755 states and 57129 transitions. Second operand 7 states. [2020-10-14 00:49:05,371 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:07,272 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:08,718 INFO L93 Difference]: Finished difference Result 90640 states and 119283 transitions. [2020-10-14 00:49:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:08,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-14 00:49:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:08,886 INFO L225 Difference]: With dead ends: 90640 [2020-10-14 00:49:08,887 INFO L226 Difference]: Without dead ends: 45891 [2020-10-14 00:49:08,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:09,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45891 states. [2020-10-14 00:49:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45891 to 45259. [2020-10-14 00:49:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45259 states. [2020-10-14 00:49:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45259 states to 45259 states and 56839 transitions. [2020-10-14 00:49:10,108 INFO L78 Accepts]: Start accepts. Automaton has 45259 states and 56839 transitions. Word has length 323 [2020-10-14 00:49:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:10,109 INFO L479 AbstractCegarLoop]: Abstraction has 45259 states and 56839 transitions. [2020-10-14 00:49:10,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 45259 states and 56839 transitions. [2020-10-14 00:49:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-14 00:49:10,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:10,236 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:10,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:49:10,236 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:10,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:10,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1212110026, now seen corresponding path program 1 times [2020-10-14 00:49:10,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:10,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820415387] [2020-10-14 00:49:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:10,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:13,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:13,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:49:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,499 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:15,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:49:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:49:15,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:15,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 00:49:15,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:49:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:49:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:49:15,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:15,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 00:49:15,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:49:15,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:49:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:49:15,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:49:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:49:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 00:49:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:15,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:49:15,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:15,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 00:49:15,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:15,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:49:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:15,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-14 00:49:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:15,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:16,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:16,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:49:16,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-14 00:49:16,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:16,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:16,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:16,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 00:49:16,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:16,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 154 proven. 40 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-14 00:49:16,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820415387] [2020-10-14 00:49:16,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:16,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:16,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377913023] [2020-10-14 00:49:16,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:16,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:16,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:16,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:16,227 INFO L87 Difference]: Start difference. First operand 45259 states and 56839 transitions. Second operand 7 states. [2020-10-14 00:49:16,531 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:16,994 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:49:20,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:20,655 INFO L93 Difference]: Finished difference Result 97500 states and 131954 transitions. [2020-10-14 00:49:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:49:20,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-14 00:49:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:20,886 INFO L225 Difference]: With dead ends: 97500 [2020-10-14 00:49:20,886 INFO L226 Difference]: Without dead ends: 52247 [2020-10-14 00:49:20,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52247 states. [2020-10-14 00:49:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52247 to 50401. [2020-10-14 00:49:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50401 states. [2020-10-14 00:49:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50401 states to 50401 states and 63144 transitions. [2020-10-14 00:49:22,322 INFO L78 Accepts]: Start accepts. Automaton has 50401 states and 63144 transitions. Word has length 342 [2020-10-14 00:49:22,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:22,323 INFO L479 AbstractCegarLoop]: Abstraction has 50401 states and 63144 transitions. [2020-10-14 00:49:22,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:22,323 INFO L276 IsEmpty]: Start isEmpty. Operand 50401 states and 63144 transitions. [2020-10-14 00:49:22,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-14 00:49:22,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:22,441 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:22,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:49:22,442 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:22,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1513665662, now seen corresponding path program 1 times [2020-10-14 00:49:22,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:22,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895002304] [2020-10-14 00:49:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:22,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:23,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:23,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:27,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:27,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-14 00:49:27,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:49:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-14 00:49:27,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:27,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 00:49:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:49:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:27,813 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:27,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:27,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:27,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:27,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:27,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:49:27,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:27,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:27,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:27,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:27,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:27,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:27,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:49:27,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:49:27,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:27,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:27,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:49:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:27,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:27,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:49:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:49:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:28,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:49:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 00:49:28,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:28,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:49:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:28,314 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-14 00:49:28,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895002304] [2020-10-14 00:49:28,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:28,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:28,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910603554] [2020-10-14 00:49:28,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:28,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:28,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:28,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:28,316 INFO L87 Difference]: Start difference. First operand 50401 states and 63144 transitions. Second operand 7 states. [2020-10-14 00:49:28,480 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:29,206 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:49:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:31,721 INFO L93 Difference]: Finished difference Result 101254 states and 128931 transitions. [2020-10-14 00:49:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:49:31,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-14 00:49:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:31,879 INFO L225 Difference]: With dead ends: 101254 [2020-10-14 00:49:31,879 INFO L226 Difference]: Without dead ends: 51082 [2020-10-14 00:49:31,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:49:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51082 states. [2020-10-14 00:49:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51082 to 50632. [2020-10-14 00:49:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50632 states. [2020-10-14 00:49:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50632 states to 50632 states and 60949 transitions. [2020-10-14 00:49:32,954 INFO L78 Accepts]: Start accepts. Automaton has 50632 states and 60949 transitions. Word has length 349 [2020-10-14 00:49:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:32,955 INFO L479 AbstractCegarLoop]: Abstraction has 50632 states and 60949 transitions. [2020-10-14 00:49:32,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:32,955 INFO L276 IsEmpty]: Start isEmpty. Operand 50632 states and 60949 transitions. [2020-10-14 00:49:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 00:49:33,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:33,033 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:33,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:49:33,033 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:33,033 INFO L82 PathProgramCache]: Analyzing trace with hash -473683164, now seen corresponding path program 1 times [2020-10-14 00:49:33,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:33,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107403159] [2020-10-14 00:49:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:33,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:37,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:38,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:38,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-14 00:49:38,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:49:38,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 00:49:38,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:38,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:38,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:49:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:49:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:38,280 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:38,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:38,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:38,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:38,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:49:38,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:49:38,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:38,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:49:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:49:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:38,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:49:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-14 00:49:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:38,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:38,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:49:38,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:38,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:38,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:49:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 00:49:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:38,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:38,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:38,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-14 00:49:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:38,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:38,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:49:38,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 00:49:38,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:38,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 00:49:38,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:38,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 169 proven. 40 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-14 00:49:38,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107403159] [2020-10-14 00:49:38,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:38,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:38,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111876104] [2020-10-14 00:49:38,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:38,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:38,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:38,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:38,741 INFO L87 Difference]: Start difference. First operand 50632 states and 60949 transitions. Second operand 7 states. [2020-10-14 00:49:38,924 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:49:41,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:41,085 INFO L93 Difference]: Finished difference Result 91542 states and 110429 transitions. [2020-10-14 00:49:41,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:49:41,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-14 00:49:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:41,161 INFO L225 Difference]: With dead ends: 91542 [2020-10-14 00:49:41,162 INFO L226 Difference]: Without dead ends: 41137 [2020-10-14 00:49:41,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:49:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41137 states. [2020-10-14 00:49:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41137 to 41055. [2020-10-14 00:49:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41055 states. [2020-10-14 00:49:41,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41055 states to 41055 states and 48251 transitions. [2020-10-14 00:49:41,785 INFO L78 Accepts]: Start accepts. Automaton has 41055 states and 48251 transitions. Word has length 356 [2020-10-14 00:49:41,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:41,786 INFO L479 AbstractCegarLoop]: Abstraction has 41055 states and 48251 transitions. [2020-10-14 00:49:41,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 41055 states and 48251 transitions. [2020-10-14 00:49:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-14 00:49:41,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:41,853 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:41,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:49:41,853 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:41,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:41,854 INFO L82 PathProgramCache]: Analyzing trace with hash 962066906, now seen corresponding path program 1 times [2020-10-14 00:49:41,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:41,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697592710] [2020-10-14 00:49:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:46,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:46,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-14 00:49:46,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:49:46,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 00:49:46,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:46,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:46,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-14 00:49:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:49:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:47,155 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:47,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:47,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:47,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:47,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:47,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:47,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:47,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:47,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:47,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:49:47,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:49:47,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:47,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:47,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:47,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:49:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:47,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:47,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:49:47,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:47,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 00:49:47,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:47,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:49:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 00:49:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:47,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:49:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-14 00:49:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:47,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:49:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-14 00:49:47,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697592710] [2020-10-14 00:49:47,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:47,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:47,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125780241] [2020-10-14 00:49:47,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:47,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:47,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:47,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:47,863 INFO L87 Difference]: Start difference. First operand 41055 states and 48251 transitions. Second operand 7 states. [2020-10-14 00:49:48,025 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:49:51,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:49:51,212 INFO L93 Difference]: Finished difference Result 87380 states and 105307 transitions. [2020-10-14 00:49:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:49:51,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-14 00:49:51,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:49:51,310 INFO L225 Difference]: With dead ends: 87380 [2020-10-14 00:49:51,310 INFO L226 Difference]: Without dead ends: 46552 [2020-10-14 00:49:51,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:49:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46552 states. [2020-10-14 00:49:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46552 to 44021. [2020-10-14 00:49:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44021 states. [2020-10-14 00:49:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44021 states to 44021 states and 51990 transitions. [2020-10-14 00:49:52,373 INFO L78 Accepts]: Start accepts. Automaton has 44021 states and 51990 transitions. Word has length 357 [2020-10-14 00:49:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:49:52,374 INFO L479 AbstractCegarLoop]: Abstraction has 44021 states and 51990 transitions. [2020-10-14 00:49:52,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:49:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 44021 states and 51990 transitions. [2020-10-14 00:49:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-14 00:49:52,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:49:52,437 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:49:52,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:49:52,438 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:49:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:49:52,438 INFO L82 PathProgramCache]: Analyzing trace with hash -355021254, now seen corresponding path program 1 times [2020-10-14 00:49:52,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:49:52,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783160033] [2020-10-14 00:49:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:49:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:53,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:57,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:49:57,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:49:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:57,757 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:49:57,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:49:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:57,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:49:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:57,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:57,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:49:57,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:57,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 00:49:57,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:57,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:49:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:49:57,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:49:57,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:49:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:58,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:58,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:49:58,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 00:49:58,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:58,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:49:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:49:58,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 00:49:58,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 00:49:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:58,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:58,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:49:58,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:49:58,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:58,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 00:49:58,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:58,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:49:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:58,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:49:58,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:49:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:58,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:49:58,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 00:49:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:49:58,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:49:58,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:49:58,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:49:58,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:49:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 00:49:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:49:58,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:49:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:49:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 00:49:58,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:49:58,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:49:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 250 proven. 110 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-14 00:49:58,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783160033] [2020-10-14 00:49:58,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:49:58,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:49:58,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140918665] [2020-10-14 00:49:58,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:49:58,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:49:58,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:49:58,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:49:58,462 INFO L87 Difference]: Start difference. First operand 44021 states and 51990 transitions. Second operand 7 states. [2020-10-14 00:49:58,870 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:49:59,685 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:50:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:02,565 INFO L93 Difference]: Finished difference Result 96577 states and 112480 transitions. [2020-10-14 00:50:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:50:02,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-10-14 00:50:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:02,664 INFO L225 Difference]: With dead ends: 96577 [2020-10-14 00:50:02,664 INFO L226 Difference]: Without dead ends: 53031 [2020-10-14 00:50:02,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:50:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53031 states. [2020-10-14 00:50:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53031 to 52065. [2020-10-14 00:50:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52065 states. [2020-10-14 00:50:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52065 states to 52065 states and 61066 transitions. [2020-10-14 00:50:03,442 INFO L78 Accepts]: Start accepts. Automaton has 52065 states and 61066 transitions. Word has length 427 [2020-10-14 00:50:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:03,442 INFO L479 AbstractCegarLoop]: Abstraction has 52065 states and 61066 transitions. [2020-10-14 00:50:03,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52065 states and 61066 transitions. [2020-10-14 00:50:03,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-14 00:50:03,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:03,515 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:50:03,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:50:03,516 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:03,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:03,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1334967637, now seen corresponding path program 1 times [2020-10-14 00:50:03,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:03,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855739458] [2020-10-14 00:50:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:03,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:08,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-14 00:50:08,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:50:08,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 00:50:08,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:08,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:08,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:50:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 00:50:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:08,829 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:08,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:08,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:08,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:08,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:50:08,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:08,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:08,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:08,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:08,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:08,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:50:08,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:08,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:50:08,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:08,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:08,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:08,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:50:08,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:50:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:09,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 00:50:09,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-14 00:50:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:09,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:09,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:09,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:50:09,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:09,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:50:09,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:09,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:50:09,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:09,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-14 00:50:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:09,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:09,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:50:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 00:50:09,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:09,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 00:50:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 242 proven. 105 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 00:50:09,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855739458] [2020-10-14 00:50:09,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:09,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:09,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490406498] [2020-10-14 00:50:09,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:09,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:09,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:09,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:09,683 INFO L87 Difference]: Start difference. First operand 52065 states and 61066 transitions. Second operand 7 states. [2020-10-14 00:50:10,042 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:50:11,657 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:50:13,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:13,584 INFO L93 Difference]: Finished difference Result 115335 states and 134885 transitions. [2020-10-14 00:50:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:50:13,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-10-14 00:50:13,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:13,708 INFO L225 Difference]: With dead ends: 115335 [2020-10-14 00:50:13,708 INFO L226 Difference]: Without dead ends: 63497 [2020-10-14 00:50:13,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:50:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63497 states. [2020-10-14 00:50:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63497 to 62506. [2020-10-14 00:50:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62506 states. [2020-10-14 00:50:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62506 states to 62506 states and 71656 transitions. [2020-10-14 00:50:16,541 INFO L78 Accepts]: Start accepts. Automaton has 62506 states and 71656 transitions. Word has length 427 [2020-10-14 00:50:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:16,541 INFO L479 AbstractCegarLoop]: Abstraction has 62506 states and 71656 transitions. [2020-10-14 00:50:16,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 62506 states and 71656 transitions. [2020-10-14 00:50:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-14 00:50:16,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:16,628 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:16,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 00:50:16,628 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash -351760883, now seen corresponding path program 1 times [2020-10-14 00:50:16,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:16,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12711970] [2020-10-14 00:50:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:21,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:21,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 454 [2020-10-14 00:50:21,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:50:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 00:50:21,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:21,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:21,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:21,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 00:50:21,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 00:50:21,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:22,003 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:22,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:22,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:22,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:22,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:22,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:22,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:22,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 00:50:22,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:22,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:22,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:50:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:22,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:22,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 00:50:22,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 00:50:22,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:22,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-14 00:50:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:22,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:22,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:50:22,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:22,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 00:50:22,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:22,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:50:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:22,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-14 00:50:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:22,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:22,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 00:50:22,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:22,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 00:50:22,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:22,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 00:50:22,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 00:50:22,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12711970] [2020-10-14 00:50:22,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:22,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:22,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199812147] [2020-10-14 00:50:22,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:22,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:22,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:22,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:22,737 INFO L87 Difference]: Start difference. First operand 62506 states and 71656 transitions. Second operand 7 states. [2020-10-14 00:50:22,915 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:50:24,387 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:50:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:26,553 INFO L93 Difference]: Finished difference Result 129595 states and 148829 transitions. [2020-10-14 00:50:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:50:26,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 438 [2020-10-14 00:50:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:26,692 INFO L225 Difference]: With dead ends: 129595 [2020-10-14 00:50:26,692 INFO L226 Difference]: Without dead ends: 67314 [2020-10-14 00:50:26,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:50:26,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67314 states. [2020-10-14 00:50:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67314 to 67167. [2020-10-14 00:50:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67167 states. [2020-10-14 00:50:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67167 states to 67167 states and 76257 transitions. [2020-10-14 00:50:27,674 INFO L78 Accepts]: Start accepts. Automaton has 67167 states and 76257 transitions. Word has length 438 [2020-10-14 00:50:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:27,674 INFO L479 AbstractCegarLoop]: Abstraction has 67167 states and 76257 transitions. [2020-10-14 00:50:27,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 67167 states and 76257 transitions. [2020-10-14 00:50:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-14 00:50:27,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:27,759 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:50:27,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 00:50:27,760 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:27,760 INFO L82 PathProgramCache]: Analyzing trace with hash 870446882, now seen corresponding path program 1 times [2020-10-14 00:50:27,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:27,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142087480] [2020-10-14 00:50:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:27,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:27,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:28,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:28,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:32,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:32,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-14 00:50:32,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:50:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 00:50:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:32,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 00:50:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 00:50:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:33,074 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:33,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:33,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:33,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:33,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:50:33,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:33,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:33,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:33,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:34,408 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 00:50:34,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:34,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:34,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:34,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:50:34,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:50:34,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:34,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:34,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:50:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:34,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:50:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:50:34,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:34,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-14 00:50:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:34,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 00:50:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 00:50:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:34,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:34,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 00:50:34,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 00:50:34,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:34,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 00:50:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:50:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 00:50:35,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142087480] [2020-10-14 00:50:35,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:35,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:50:35,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146373959] [2020-10-14 00:50:35,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:35,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:35,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:35,019 INFO L87 Difference]: Start difference. First operand 67167 states and 76257 transitions. Second operand 7 states. [2020-10-14 00:50:35,183 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:36,632 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:38,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:38,376 INFO L93 Difference]: Finished difference Result 133127 states and 151262 transitions. [2020-10-14 00:50:38,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:50:38,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-14 00:50:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:38,574 INFO L225 Difference]: With dead ends: 133127 [2020-10-14 00:50:38,574 INFO L226 Difference]: Without dead ends: 66185 [2020-10-14 00:50:38,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:50:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66185 states. [2020-10-14 00:50:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66185 to 64000. [2020-10-14 00:50:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64000 states. [2020-10-14 00:50:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64000 states to 64000 states and 71143 transitions. [2020-10-14 00:50:39,875 INFO L78 Accepts]: Start accepts. Automaton has 64000 states and 71143 transitions. Word has length 459 [2020-10-14 00:50:39,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:39,876 INFO L479 AbstractCegarLoop]: Abstraction has 64000 states and 71143 transitions. [2020-10-14 00:50:39,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:50:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 64000 states and 71143 transitions. [2020-10-14 00:50:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2020-10-14 00:50:39,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:39,961 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:50:39,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 00:50:39,961 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:39,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:39,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1351760407, now seen corresponding path program 1 times [2020-10-14 00:50:39,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:39,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558407317] [2020-10-14 00:50:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:40,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:40,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking...