/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:34:43,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:34:43,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:34:43,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:34:43,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:34:43,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:34:43,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:34:43,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:34:43,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:34:43,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:34:43,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:34:43,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:34:43,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:34:43,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:34:43,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:34:43,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:34:43,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:34:43,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:34:43,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:34:43,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:34:43,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:34:43,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:34:43,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:34:43,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:34:43,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:34:43,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:34:43,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:34:43,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:34:43,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:34:43,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:34:43,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:34:43,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:34:43,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:34:43,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:34:43,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:34:43,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:34:43,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:34:43,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:34:43,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:34:43,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:34:43,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:34:43,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:34:43,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:34:43,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:34:43,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:34:43,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:34:43,216 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:34:43,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:34:43,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:34:43,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:34:43,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:34:43,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:34:43,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:34:43,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:34:43,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:34:43,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:34:43,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:34:43,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:34:43,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:34:43,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:34:43,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:34:43,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:34:43,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:34:43,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:34:43,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:34:43,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:34:43,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:34:43,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:34:43,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:34:43,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:34:43,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:34:43,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:34:43,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:34:43,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:34:43,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:34:43,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:34:43,611 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:34:43,612 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label34.c [2020-10-13 09:34:43,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41b918b6/b225cadcae454d61b1fadde909c4a32e/FLAGc89ad0cd5 [2020-10-13 09:34:44,417 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:34:44,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label34.c [2020-10-13 09:34:44,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41b918b6/b225cadcae454d61b1fadde909c4a32e/FLAGc89ad0cd5 [2020-10-13 09:34:44,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a41b918b6/b225cadcae454d61b1fadde909c4a32e [2020-10-13 09:34:44,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:34:44,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:34:44,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:44,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:34:44,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:34:44,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:44" (1/1) ... [2020-10-13 09:34:44,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518dc62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:44, skipping insertion in model container [2020-10-13 09:34:44,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:34:44" (1/1) ... [2020-10-13 09:34:44,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:34:44,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:34:46,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:46,241 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:34:46,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:34:46,746 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:34:46,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46 WrapperNode [2020-10-13 09:34:46,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:34:46,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:34:46,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:34:46,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:34:46,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... [2020-10-13 09:34:46,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... [2020-10-13 09:34:46,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... [2020-10-13 09:34:46,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... [2020-10-13 09:34:46,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... [2020-10-13 09:34:47,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... [2020-10-13 09:34:47,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... [2020-10-13 09:34:47,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:34:47,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:34:47,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:34:47,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:34:47,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:34:47,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:34:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:34:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:34:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:34:47,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:34:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:34:47,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:34:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:34:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:34:47,198 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:34:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:34:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:34:47,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:34:56,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:34:56,360 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:34:56,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:56 BoogieIcfgContainer [2020-10-13 09:34:56,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:34:56,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:34:56,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:34:56,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:34:56,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:34:44" (1/3) ... [2020-10-13 09:34:56,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afd8c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:56, skipping insertion in model container [2020-10-13 09:34:56,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:34:46" (2/3) ... [2020-10-13 09:34:56,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afd8c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:34:56, skipping insertion in model container [2020-10-13 09:34:56,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:34:56" (3/3) ... [2020-10-13 09:34:56,437 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label34.c [2020-10-13 09:34:56,450 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:34:56,459 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:34:56,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:34:56,506 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:34:56,506 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:34:56,506 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:34:56,506 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:34:56,506 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:34:56,507 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:34:56,507 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:34:56,507 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:34:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-13 09:34:56,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 09:34:56,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:34:56,547 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] [2020-10-13 09:34:56,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:34:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:34:56,555 INFO L82 PathProgramCache]: Analyzing trace with hash -653265423, now seen corresponding path program 1 times [2020-10-13 09:34:56,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:34:56,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084942879] [2020-10-13 09:34:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:34:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:57,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:57,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 09:34:57,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-13 09:34:57,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:34:57,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:34:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 09:34:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:34:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:34:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:34:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:34:57,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:34:57,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:34:57,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:34:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:34:57,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:34:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:34:57,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:34:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:34:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:34:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:34:57,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084942879] [2020-10-13 09:34:57,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:34:57,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:34:57,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482054180] [2020-10-13 09:34:57,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:34:57,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:34:57,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:34:57,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:34:57,309 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-13 09:35:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:06,515 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-13 09:35:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:06,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 09:35:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:06,551 INFO L225 Difference]: With dead ends: 1692 [2020-10-13 09:35:06,551 INFO L226 Difference]: Without dead ends: 1012 [2020-10-13 09:35:06,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-13 09:35:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-13 09:35:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-13 09:35:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-13 09:35:06,741 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 25 [2020-10-13 09:35:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:06,744 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-13 09:35:06,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:35:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-13 09:35:06,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 09:35:06,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:06,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:06,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:35:06,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:06,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:06,759 INFO L82 PathProgramCache]: Analyzing trace with hash 837363719, now seen corresponding path program 1 times [2020-10-13 09:35:06,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:06,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480956173] [2020-10-13 09:35:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:06,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:07,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:08,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:08,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:35:08,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:35:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-13 09:35:08,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 09:35:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:35:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:35:08,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:35:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:08,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:08,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:08,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:08,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:35:08,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 09:35:08,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:35:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:35:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:08,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480956173] [2020-10-13 09:35:08,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:08,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:08,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705095726] [2020-10-13 09:35:08,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:08,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:08,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:08,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:08,516 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-13 09:35:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:20,228 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-13 09:35:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:20,230 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-13 09:35:20,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:20,240 INFO L225 Difference]: With dead ends: 2884 [2020-10-13 09:35:20,240 INFO L226 Difference]: Without dead ends: 1888 [2020-10-13 09:35:20,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-13 09:35:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-13 09:35:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-13 09:35:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-13 09:35:20,369 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 96 [2020-10-13 09:35:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:20,370 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-13 09:35:20,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-13 09:35:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 09:35:20,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:20,373 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:35:20,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:35:20,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:20,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1398395687, now seen corresponding path program 1 times [2020-10-13 09:35:20,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:20,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040671712] [2020-10-13 09:35:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:20,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:20,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:35:20,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-13 09:35:20,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:35:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:35:20,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 09:35:20,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:20,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:20,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:20,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:20,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:20,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:35:20,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:35:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:21,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:21,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:21,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:35:21,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:21,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-13 09:35:21,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:35:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:35:21,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:35:21,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:21,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040671712] [2020-10-13 09:35:21,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:21,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:35:21,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194639140] [2020-10-13 09:35:21,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:35:21,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:21,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:35:21,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:35:21,392 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 8 states. [2020-10-13 09:35:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:41,448 INFO L93 Difference]: Finished difference Result 6114 states and 8515 transitions. [2020-10-13 09:35:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:35:41,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-13 09:35:41,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:41,476 INFO L225 Difference]: With dead ends: 6114 [2020-10-13 09:35:41,477 INFO L226 Difference]: Without dead ends: 4236 [2020-10-13 09:35:41,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:35:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4236 states. [2020-10-13 09:35:41,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4236 to 4193. [2020-10-13 09:35:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4193 states. [2020-10-13 09:35:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 5390 transitions. [2020-10-13 09:35:41,613 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 5390 transitions. Word has length 99 [2020-10-13 09:35:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:41,614 INFO L479 AbstractCegarLoop]: Abstraction has 4193 states and 5390 transitions. [2020-10-13 09:35:41,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:35:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 5390 transitions. [2020-10-13 09:35:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 09:35:41,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:41,625 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:35:41,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:35:41,626 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:41,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:41,626 INFO L82 PathProgramCache]: Analyzing trace with hash -265668197, now seen corresponding path program 1 times [2020-10-13 09:35:41,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:41,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884077548] [2020-10-13 09:35:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:41,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:42,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 09:35:42,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:35:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-13 09:35:42,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:35:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:35:42,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:35:42,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:35:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:42,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:42,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:35:42,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:35:42,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:42,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:35:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:35:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:42,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:35:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:35:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:35:42,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:35:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 09:35:42,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:35:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:35:42,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:35:42,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:35:42,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:35:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:35:42,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884077548] [2020-10-13 09:35:42,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:35:42,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:35:42,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783932797] [2020-10-13 09:35:42,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:35:42,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:35:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:35:42,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:35:42,884 INFO L87 Difference]: Start difference. First operand 4193 states and 5390 transitions. Second operand 5 states. [2020-10-13 09:35:57,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:35:57,528 INFO L93 Difference]: Finished difference Result 9766 states and 13039 transitions. [2020-10-13 09:35:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:35:57,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 09:35:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:35:57,560 INFO L225 Difference]: With dead ends: 9766 [2020-10-13 09:35:57,560 INFO L226 Difference]: Without dead ends: 6013 [2020-10-13 09:35:57,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:35:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6013 states. [2020-10-13 09:35:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6013 to 5986. [2020-10-13 09:35:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5986 states. [2020-10-13 09:35:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5986 states to 5986 states and 7712 transitions. [2020-10-13 09:35:57,742 INFO L78 Accepts]: Start accepts. Automaton has 5986 states and 7712 transitions. Word has length 122 [2020-10-13 09:35:57,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:35:57,744 INFO L479 AbstractCegarLoop]: Abstraction has 5986 states and 7712 transitions. [2020-10-13 09:35:57,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:35:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5986 states and 7712 transitions. [2020-10-13 09:35:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 09:35:57,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:35:57,750 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:35:57,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:35:57,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:35:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:35:57,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1372290617, now seen corresponding path program 1 times [2020-10-13 09:35:57,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:35:57,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609027133] [2020-10-13 09:35:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:35:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:35:57,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:57,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:35:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:01,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:02,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:02,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-13 09:36:02,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:36:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 09:36:02,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 09:36:02,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:36:02,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:02,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:02,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:02,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:02,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:02,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:36:02,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:02,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:02,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:02,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:03,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:03,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:36:03,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:03,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:36:03,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:36:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:03,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:03,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:36:03,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:03,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 09:36:03,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:03,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:36:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 09:36:03,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609027133] [2020-10-13 09:36:03,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:03,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:03,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109597957] [2020-10-13 09:36:03,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:03,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:03,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:03,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:03,138 INFO L87 Difference]: Start difference. First operand 5986 states and 7712 transitions. Second operand 5 states. [2020-10-13 09:36:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:22,962 INFO L93 Difference]: Finished difference Result 16847 states and 22333 transitions. [2020-10-13 09:36:22,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:22,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-13 09:36:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:23,014 INFO L225 Difference]: With dead ends: 16847 [2020-10-13 09:36:23,014 INFO L226 Difference]: Without dead ends: 11300 [2020-10-13 09:36:23,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2020-10-13 09:36:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 11297. [2020-10-13 09:36:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11297 states. [2020-10-13 09:36:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11297 states to 11297 states and 14247 transitions. [2020-10-13 09:36:23,309 INFO L78 Accepts]: Start accepts. Automaton has 11297 states and 14247 transitions. Word has length 169 [2020-10-13 09:36:23,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:23,311 INFO L479 AbstractCegarLoop]: Abstraction has 11297 states and 14247 transitions. [2020-10-13 09:36:23,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 11297 states and 14247 transitions. [2020-10-13 09:36:23,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 09:36:23,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:23,410 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:23,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:36:23,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:23,411 INFO L82 PathProgramCache]: Analyzing trace with hash 507510183, now seen corresponding path program 1 times [2020-10-13 09:36:23,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:23,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498851514] [2020-10-13 09:36:23,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:23,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:23,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:27,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 09:36:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:36:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 09:36:28,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 09:36:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:36:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:28,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:28,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:28,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:28,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:28,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:36:28,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:28,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:28,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:28,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:28,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:28,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:36:28,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 09:36:28,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:28,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:28,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:36:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:28,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:28,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 09:36:28,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:28,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 09:36:28,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:28,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:28,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 09:36:28,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:36:28,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498851514] [2020-10-13 09:36:28,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:28,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:28,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048425206] [2020-10-13 09:36:28,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:28,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:28,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:28,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:28,996 INFO L87 Difference]: Start difference. First operand 11297 states and 14247 transitions. Second operand 5 states. [2020-10-13 09:36:40,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:40,431 INFO L93 Difference]: Finished difference Result 21735 states and 27561 transitions. [2020-10-13 09:36:40,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:40,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 09:36:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:40,494 INFO L225 Difference]: With dead ends: 21735 [2020-10-13 09:36:40,494 INFO L226 Difference]: Without dead ends: 11300 [2020-10-13 09:36:40,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11300 states. [2020-10-13 09:36:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11300 to 11297. [2020-10-13 09:36:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11297 states. [2020-10-13 09:36:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11297 states to 11297 states and 14243 transitions. [2020-10-13 09:36:40,768 INFO L78 Accepts]: Start accepts. Automaton has 11297 states and 14243 transitions. Word has length 174 [2020-10-13 09:36:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:40,769 INFO L479 AbstractCegarLoop]: Abstraction has 11297 states and 14243 transitions. [2020-10-13 09:36:40,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 11297 states and 14243 transitions. [2020-10-13 09:36:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 09:36:40,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:40,774 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:36:40,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:36:40,774 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:40,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:40,775 INFO L82 PathProgramCache]: Analyzing trace with hash -897425617, now seen corresponding path program 1 times [2020-10-13 09:36:40,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:40,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494044589] [2020-10-13 09:36:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:40,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:41,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:45,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:45,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:36:45,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:36:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:36:45,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 09:36:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:36:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:45,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:45,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:45,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:45,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:36:45,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:45,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:45,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:46,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:46,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:36:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:36:46,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:46,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:36:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:46,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:46,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:36:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:36:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 09:36:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:36:46,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494044589] [2020-10-13 09:36:46,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:36:46,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:36:46,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39459629] [2020-10-13 09:36:46,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:36:46,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:36:46,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:36:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:36:46,209 INFO L87 Difference]: Start difference. First operand 11297 states and 14243 transitions. Second operand 5 states. [2020-10-13 09:36:57,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:36:57,991 INFO L93 Difference]: Finished difference Result 25287 states and 32797 transitions. [2020-10-13 09:36:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:36:57,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-13 09:36:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:36:58,048 INFO L225 Difference]: With dead ends: 25287 [2020-10-13 09:36:58,048 INFO L226 Difference]: Without dead ends: 14868 [2020-10-13 09:36:58,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:36:58,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14868 states. [2020-10-13 09:36:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14868 to 14849. [2020-10-13 09:36:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14849 states. [2020-10-13 09:36:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14849 states to 14849 states and 18820 transitions. [2020-10-13 09:36:58,387 INFO L78 Accepts]: Start accepts. Automaton has 14849 states and 18820 transitions. Word has length 178 [2020-10-13 09:36:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:36:58,387 INFO L479 AbstractCegarLoop]: Abstraction has 14849 states and 18820 transitions. [2020-10-13 09:36:58,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:36:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14849 states and 18820 transitions. [2020-10-13 09:36:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 09:36:58,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:36:58,392 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:36:58,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:36:58,392 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:36:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:36:58,393 INFO L82 PathProgramCache]: Analyzing trace with hash 542188185, now seen corresponding path program 1 times [2020-10-13 09:36:58,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:36:58,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465712512] [2020-10-13 09:36:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:36:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:59,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:59,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-13 09:36:59,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:36:59,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1118 [2020-10-13 09:36:59,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:36:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-10-13 09:36:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:36:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:36:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:36:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:59,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:59,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:36:59,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:36:59,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:36:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:36:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:36:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:36:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:36:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:36:59,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:36:59,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 09:36:59,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:36:59,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-13 09:36:59,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:36:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:36:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:36:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 09:36:59,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:37:00,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465712512] [2020-10-13 09:37:00,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:00,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:00,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356636311] [2020-10-13 09:37:00,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:00,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:00,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:00,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:00,036 INFO L87 Difference]: Start difference. First operand 14849 states and 18820 transitions. Second operand 5 states. [2020-10-13 09:37:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:19,693 INFO L93 Difference]: Finished difference Result 34991 states and 46038 transitions. [2020-10-13 09:37:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:19,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-13 09:37:19,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:19,780 INFO L225 Difference]: With dead ends: 34991 [2020-10-13 09:37:19,780 INFO L226 Difference]: Without dead ends: 21020 [2020-10-13 09:37:19,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:19,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21020 states. [2020-10-13 09:37:20,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21020 to 20584. [2020-10-13 09:37:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20584 states. [2020-10-13 09:37:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20584 states to 20584 states and 26498 transitions. [2020-10-13 09:37:20,325 INFO L78 Accepts]: Start accepts. Automaton has 20584 states and 26498 transitions. Word has length 180 [2020-10-13 09:37:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:20,325 INFO L479 AbstractCegarLoop]: Abstraction has 20584 states and 26498 transitions. [2020-10-13 09:37:20,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 20584 states and 26498 transitions. [2020-10-13 09:37:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 09:37:20,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:20,330 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:20,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:37:20,331 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1299203228, now seen corresponding path program 1 times [2020-10-13 09:37:20,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:20,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289658560] [2020-10-13 09:37:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:24,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:24,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:25,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:37:25,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 09:37:25,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 09:37:25,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:37:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-13 09:37:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 09:37:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:25,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:25,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:25,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:25,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:25,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:37:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:37:25,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:37:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 09:37:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:25,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:25,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:37:25,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:37:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:37:25,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 09:37:25,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289658560] [2020-10-13 09:37:25,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:25,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:37:25,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304669351] [2020-10-13 09:37:25,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:37:25,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:25,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:37:25,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:37:25,776 INFO L87 Difference]: Start difference. First operand 20584 states and 26498 transitions. Second operand 5 states. [2020-10-13 09:37:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:37:44,023 INFO L93 Difference]: Finished difference Result 49607 states and 65859 transitions. [2020-10-13 09:37:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:37:44,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-13 09:37:44,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:37:44,148 INFO L225 Difference]: With dead ends: 49607 [2020-10-13 09:37:44,149 INFO L226 Difference]: Without dead ends: 29901 [2020-10-13 09:37:44,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:37:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29901 states. [2020-10-13 09:37:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29901 to 29866. [2020-10-13 09:37:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29866 states. [2020-10-13 09:37:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29866 states to 29866 states and 39213 transitions. [2020-10-13 09:37:44,807 INFO L78 Accepts]: Start accepts. Automaton has 29866 states and 39213 transitions. Word has length 187 [2020-10-13 09:37:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:37:44,808 INFO L479 AbstractCegarLoop]: Abstraction has 29866 states and 39213 transitions. [2020-10-13 09:37:44,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:37:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 29866 states and 39213 transitions. [2020-10-13 09:37:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-13 09:37:44,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:37:44,820 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:37:44,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:37:44,820 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:37:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:37:44,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1108939779, now seen corresponding path program 1 times [2020-10-13 09:37:44,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:37:44,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70912897] [2020-10-13 09:37:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:37:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:47,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:47,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 09:37:47,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:37:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2211 [2020-10-13 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 09:37:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:37:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:47,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:37:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:37:47,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:47,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:37:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:37:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:37:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:47,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:37:47,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:37:47,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 09:37:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:37:47,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:37:47,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:37:47,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 09:37:47,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:37:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:37:47,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:37:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:37:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:37:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:37:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:37:47,607 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 91 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:37:47,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70912897] [2020-10-13 09:37:47,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:37:47,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:37:47,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395053479] [2020-10-13 09:37:47,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:37:47,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:37:47,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:37:47,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:37:47,610 INFO L87 Difference]: Start difference. First operand 29866 states and 39213 transitions. Second operand 8 states. [2020-10-13 09:38:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:38:23,204 INFO L93 Difference]: Finished difference Result 81481 states and 115765 transitions. [2020-10-13 09:38:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 09:38:23,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-10-13 09:38:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:38:23,529 INFO L225 Difference]: With dead ends: 81481 [2020-10-13 09:38:23,530 INFO L226 Difference]: Without dead ends: 52493 [2020-10-13 09:38:23,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-13 09:38:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52493 states. [2020-10-13 09:38:24,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52493 to 46457. [2020-10-13 09:38:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46457 states. [2020-10-13 09:38:24,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46457 states to 46457 states and 63694 transitions. [2020-10-13 09:38:24,797 INFO L78 Accepts]: Start accepts. Automaton has 46457 states and 63694 transitions. Word has length 196 [2020-10-13 09:38:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:38:24,798 INFO L479 AbstractCegarLoop]: Abstraction has 46457 states and 63694 transitions. [2020-10-13 09:38:24,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:38:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 46457 states and 63694 transitions. [2020-10-13 09:38:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 09:38:24,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:38:24,809 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:38:24,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:38:24,810 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:38:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:38:24,810 INFO L82 PathProgramCache]: Analyzing trace with hash -423025365, now seen corresponding path program 1 times [2020-10-13 09:38:24,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:38:24,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342650630] [2020-10-13 09:38:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:38:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:24,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:24,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:27,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:27,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 09:38:27,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:38:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2405 [2020-10-13 09:38:27,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 227 [2020-10-13 09:38:27,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:38:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:27,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:38:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:38:27,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:27,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:27,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:38:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:27,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:27,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 09:38:27,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:27,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:38:27,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:38:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:38:27,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:38:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 09:38:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:38:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:38:27,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:38:27,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-13 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:38:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:38:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 09:38:27,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342650630] [2020-10-13 09:38:27,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:38:27,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 09:38:27,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929614270] [2020-10-13 09:38:27,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:38:27,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:38:27,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:38:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:38:27,770 INFO L87 Difference]: Start difference. First operand 46457 states and 63694 transitions. Second operand 5 states.