/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/Problem13_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:31:36,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:31:36,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:31:36,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:31:36,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:31:36,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:31:36,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:31:36,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:31:36,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:31:36,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:31:36,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:31:36,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:31:36,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:31:36,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:31:36,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:31:36,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:31:36,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:31:36,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:31:36,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:31:36,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:31:36,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:31:36,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:31:36,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:31:36,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:31:36,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:31:36,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:31:36,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:31:36,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:31:36,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:31:36,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:31:36,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:31:36,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:31:36,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:31:36,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:31:36,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:31:36,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:31:36,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:31:36,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:31:36,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:31:36,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:31:36,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:31:36,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:31:36,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:31:36,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:31:36,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:31:36,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:31:36,291 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:31:36,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:31:36,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:31:36,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:31:36,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:31:36,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:31:36,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:31:36,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:31:36,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:31:36,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:31:36,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:31:36,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:31:36,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:31:36,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:31:36,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:31:36,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:31:36,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:31:36,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:31:36,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:31:36,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:31:36,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:31:36,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:31:36,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:31:36,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:31:36,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:31:36,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:31:36,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:31:36,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:31:36,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:31:36,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:31:36,659 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:31:36,660 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11.c [2020-10-13 08:31:36,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/181fa4400/69f668a63cea421ca37f9f897d185015/FLAGd80d1dbb3 [2020-10-13 08:31:37,792 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:31:37,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label11.c [2020-10-13 08:31:37,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/181fa4400/69f668a63cea421ca37f9f897d185015/FLAGd80d1dbb3 [2020-10-13 08:31:38,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/181fa4400/69f668a63cea421ca37f9f897d185015 [2020-10-13 08:31:38,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:31:38,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:31:38,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:31:38,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:31:38,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:31:38,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:38" (1/1) ... [2020-10-13 08:31:38,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:38, skipping insertion in model container [2020-10-13 08:31:38,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:38" (1/1) ... [2020-10-13 08:31:38,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:31:38,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:31:40,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:31:40,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:31:41,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:31:41,362 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:31:41,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41 WrapperNode [2020-10-13 08:31:41,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:31:41,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:31:41,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:31:41,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:31:41,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... [2020-10-13 08:31:41,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... [2020-10-13 08:31:41,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... [2020-10-13 08:31:41,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... [2020-10-13 08:31:41,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... [2020-10-13 08:31:41,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... [2020-10-13 08:31:41,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... [2020-10-13 08:31:41,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:31:41,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:31:41,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:31:41,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:31:41,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:31:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:31:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:31:41,890 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:31:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:31:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:31:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:31:41,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:31:41,891 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:31:41,892 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:31:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:31:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:31:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:31:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:31:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:31:41,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:31:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:31:41,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:31:53,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:31:53,379 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:31:53,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:31:53 BoogieIcfgContainer [2020-10-13 08:31:53,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:31:53,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:31:53,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:31:53,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:31:53,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:31:38" (1/3) ... [2020-10-13 08:31:53,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db2d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:31:53, skipping insertion in model container [2020-10-13 08:31:53,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:41" (2/3) ... [2020-10-13 08:31:53,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db2d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:31:53, skipping insertion in model container [2020-10-13 08:31:53,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:31:53" (3/3) ... [2020-10-13 08:31:53,404 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label11.c [2020-10-13 08:31:53,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:31:53,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:31:53,435 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:31:53,464 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:31:53,465 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:31:53,465 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:31:53,465 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:31:53,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:31:53,465 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:31:53,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:31:53,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:31:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:31:53,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 08:31:53,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:31:53,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:31:53,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:31:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:31:53,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1048345647, now seen corresponding path program 1 times [2020-10-13 08:31:53,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:31:53,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782962100] [2020-10-13 08:31:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:31:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:54,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:54,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 08:31:54,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-13 08:31:54,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:31:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:31:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 08:31:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:31:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:31:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:31:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:31:54,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:31:54,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:31:54,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:31:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:31:54,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:31:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:31:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:31:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:31:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:31:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:31:54,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782962100] [2020-10-13 08:31:54,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:31:54,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:31:54,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132220442] [2020-10-13 08:31:54,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:31:54,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:31:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:31:54,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:31:54,454 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:32:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:10,450 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2020-10-13 08:32:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:10,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 08:32:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:10,498 INFO L225 Difference]: With dead ends: 3243 [2020-10-13 08:32:10,499 INFO L226 Difference]: Without dead ends: 2045 [2020-10-13 08:32:10,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:10,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-13 08:32:10,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-13 08:32:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-13 08:32:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-13 08:32:10,738 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 32 [2020-10-13 08:32:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:10,742 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-13 08:32:10,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:32:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-13 08:32:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 08:32:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:10,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:10,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:32:10,757 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:10,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:10,758 INFO L82 PathProgramCache]: Analyzing trace with hash 456943543, now seen corresponding path program 1 times [2020-10-13 08:32:10,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:10,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474188812] [2020-10-13 08:32:10,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:11,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:12,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:13,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:13,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:32:13,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:32:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2289 [2020-10-13 08:32:13,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 08:32:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:32:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:32:13,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:13,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:13,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:13,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:13,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:32:13,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:32:13,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:13,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:13,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:13,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:32:13,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:13,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-13 08:32:13,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:32:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:13,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474188812] [2020-10-13 08:32:13,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:13,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:13,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713600676] [2020-10-13 08:32:13,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:13,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:13,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:13,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:13,545 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 5 states. [2020-10-13 08:32:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:27,819 INFO L93 Difference]: Finished difference Result 3991 states and 7089 transitions. [2020-10-13 08:32:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:27,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-13 08:32:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:27,848 INFO L225 Difference]: With dead ends: 3991 [2020-10-13 08:32:27,848 INFO L226 Difference]: Without dead ends: 1992 [2020-10-13 08:32:27,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 08:32:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2020-10-13 08:32:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1988. [2020-10-13 08:32:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-13 08:32:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3531 transitions. [2020-10-13 08:32:27,941 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3531 transitions. Word has length 101 [2020-10-13 08:32:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:27,941 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3531 transitions. [2020-10-13 08:32:27,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3531 transitions. [2020-10-13 08:32:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:32:27,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:27,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:27,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:32:27,945 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:27,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:27,946 INFO L82 PathProgramCache]: Analyzing trace with hash -599158814, now seen corresponding path program 1 times [2020-10-13 08:32:27,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:27,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670773528] [2020-10-13 08:32:27,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:28,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:32:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:32:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-13 08:32:28,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:32:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 08:32:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:29,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:29,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:29,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:32:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:32:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:29,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:29,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:29,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:32:29,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:29,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:32:29,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:29,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:32:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:29,233 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:29,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670773528] [2020-10-13 08:32:29,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:29,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:29,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597200463] [2020-10-13 08:32:29,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:29,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:29,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:29,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:29,238 INFO L87 Difference]: Start difference. First operand 1988 states and 3531 transitions. Second operand 5 states. [2020-10-13 08:32:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:32:48,311 INFO L93 Difference]: Finished difference Result 5656 states and 10225 transitions. [2020-10-13 08:32:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:32:48,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:32:48,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:32:48,336 INFO L225 Difference]: With dead ends: 5656 [2020-10-13 08:32:48,336 INFO L226 Difference]: Without dead ends: 3674 [2020-10-13 08:32:48,343 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 08:32:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2020-10-13 08:32:48,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3649. [2020-10-13 08:32:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3649 states. [2020-10-13 08:32:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 5563 transitions. [2020-10-13 08:32:48,463 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 5563 transitions. Word has length 104 [2020-10-13 08:32:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:32:48,464 INFO L479 AbstractCegarLoop]: Abstraction has 3649 states and 5563 transitions. [2020-10-13 08:32:48,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:32:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 5563 transitions. [2020-10-13 08:32:48,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 08:32:48,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:32:48,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:32:48,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:32:48,467 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:32:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:32:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash -119602605, now seen corresponding path program 1 times [2020-10-13 08:32:48,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:32:48,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067207073] [2020-10-13 08:32:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:32:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:49,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 08:32:49,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:32:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-13 08:32:49,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:32:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:32:49,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 08:32:49,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:49,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:32:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:49,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:49,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:49,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:32:49,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:49,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:32:49,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:32:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:49,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:32:49,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:32:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:32:49,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:32:49,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:32:49,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:32:49,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:32:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-13 08:32:49,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:32:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:32:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:32:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:32:49,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:32:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:32:49,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067207073] [2020-10-13 08:32:49,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:32:49,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:32:49,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891750004] [2020-10-13 08:32:49,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:32:49,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:32:49,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:32:49,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:32:49,916 INFO L87 Difference]: Start difference. First operand 3649 states and 5563 transitions. Second operand 5 states. [2020-10-13 08:33:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:12,297 INFO L93 Difference]: Finished difference Result 8949 states and 14288 transitions. [2020-10-13 08:33:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:12,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 08:33:12,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:12,330 INFO L225 Difference]: With dead ends: 8949 [2020-10-13 08:33:12,330 INFO L226 Difference]: Without dead ends: 5306 [2020-10-13 08:33:12,341 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 08:33:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5306 states. [2020-10-13 08:33:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5306 to 5297. [2020-10-13 08:33:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5297 states. [2020-10-13 08:33:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7619 transitions. [2020-10-13 08:33:12,516 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7619 transitions. Word has length 108 [2020-10-13 08:33:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:12,519 INFO L479 AbstractCegarLoop]: Abstraction has 5297 states and 7619 transitions. [2020-10-13 08:33:12,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:12,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7619 transitions. [2020-10-13 08:33:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 08:33:12,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:12,529 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:12,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:33:12,530 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:12,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:12,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1472690527, now seen corresponding path program 1 times [2020-10-13 08:33:12,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:12,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867515927] [2020-10-13 08:33:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:14,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:14,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 08:33:14,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2057 [2020-10-13 08:33:14,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 08:33:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 08:33:14,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:14,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:14,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:14,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:33:14,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:14,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:14,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:14,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:14,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:14,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:33:14,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 08:33:14,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:14,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 08:33:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:15,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867515927] [2020-10-13 08:33:15,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:15,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:15,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166151690] [2020-10-13 08:33:15,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:15,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:15,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:15,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:15,055 INFO L87 Difference]: Start difference. First operand 5297 states and 7619 transitions. Second operand 5 states. [2020-10-13 08:33:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:39,651 INFO L93 Difference]: Finished difference Result 15638 states and 22924 transitions. [2020-10-13 08:33:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:39,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-13 08:33:39,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:39,702 INFO L225 Difference]: With dead ends: 15638 [2020-10-13 08:33:39,703 INFO L226 Difference]: Without dead ends: 10347 [2020-10-13 08:33:39,718 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 08:33:39,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10347 states. [2020-10-13 08:33:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10347 to 10323. [2020-10-13 08:33:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10323 states. [2020-10-13 08:33:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10323 states to 10323 states and 14216 transitions. [2020-10-13 08:33:40,023 INFO L78 Accepts]: Start accepts. Automaton has 10323 states and 14216 transitions. Word has length 152 [2020-10-13 08:33:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:40,024 INFO L479 AbstractCegarLoop]: Abstraction has 10323 states and 14216 transitions. [2020-10-13 08:33:40,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 10323 states and 14216 transitions. [2020-10-13 08:33:40,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-13 08:33:40,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:40,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:33:40,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:33:40,038 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:40,040 INFO L82 PathProgramCache]: Analyzing trace with hash -632467821, now seen corresponding path program 1 times [2020-10-13 08:33:40,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:40,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566845294] [2020-10-13 08:33:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:40,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:40,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:44,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:44,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-13 08:33:44,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:33:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3998 [2020-10-13 08:33:44,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:44,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 08:33:44,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 08:33:44,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:44,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:44,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:44,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:44,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:44,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:44,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:33:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:33:44,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:44,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:33:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:44,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:44,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:33:44,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:33:44,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:33:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-13 08:33:44,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566845294] [2020-10-13 08:33:44,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:44,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:44,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420937588] [2020-10-13 08:33:44,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:44,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:44,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:44,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:44,440 INFO L87 Difference]: Start difference. First operand 10323 states and 14216 transitions. Second operand 5 states. [2020-10-13 08:34:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:08,251 INFO L93 Difference]: Finished difference Result 23920 states and 34458 transitions. [2020-10-13 08:34:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:08,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-13 08:34:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:08,304 INFO L225 Difference]: With dead ends: 23920 [2020-10-13 08:34:08,305 INFO L226 Difference]: Without dead ends: 13603 [2020-10-13 08:34:08,327 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 08:34:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13603 states. [2020-10-13 08:34:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13603 to 13586. [2020-10-13 08:34:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13586 states. [2020-10-13 08:34:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13586 states to 13586 states and 18848 transitions. [2020-10-13 08:34:08,649 INFO L78 Accepts]: Start accepts. Automaton has 13586 states and 18848 transitions. Word has length 200 [2020-10-13 08:34:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:08,650 INFO L479 AbstractCegarLoop]: Abstraction has 13586 states and 18848 transitions. [2020-10-13 08:34:08,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:08,650 INFO L276 IsEmpty]: Start isEmpty. Operand 13586 states and 18848 transitions. [2020-10-13 08:34:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-13 08:34:08,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:08,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:34:08,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:34:08,659 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:08,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1596212469, now seen corresponding path program 1 times [2020-10-13 08:34:08,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:08,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609758445] [2020-10-13 08:34:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:08,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:08,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:10,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:13,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:13,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 08:34:13,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:34:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4574 [2020-10-13 08:34:13,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 204 [2020-10-13 08:34:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:34:13,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:13,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:13,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:13,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:13,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:34:13,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:13,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:13,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:13,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:13,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:13,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 08:34:13,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:13,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:34:13,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:13,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:13,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:13,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:13,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 08:34:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:13,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:13,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:13,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:34:13,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:13,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 08:34:13,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:13,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:13,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:34:13,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-13 08:34:13,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609758445] [2020-10-13 08:34:13,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:13,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:34:13,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580439111] [2020-10-13 08:34:13,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:13,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:13,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:13,861 INFO L87 Difference]: Start difference. First operand 13586 states and 18848 transitions. Second operand 5 states. [2020-10-13 08:34:33,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:33,497 INFO L93 Difference]: Finished difference Result 27193 states and 37760 transitions. [2020-10-13 08:34:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:33,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-13 08:34:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:33,546 INFO L225 Difference]: With dead ends: 27193 [2020-10-13 08:34:33,546 INFO L226 Difference]: Without dead ends: 13590 [2020-10-13 08:34:33,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 08:34:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13590 states. [2020-10-13 08:34:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13590 to 13586. [2020-10-13 08:34:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13586 states. [2020-10-13 08:34:33,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13586 states to 13586 states and 18840 transitions. [2020-10-13 08:34:33,882 INFO L78 Accepts]: Start accepts. Automaton has 13586 states and 18840 transitions. Word has length 224 [2020-10-13 08:34:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:33,883 INFO L479 AbstractCegarLoop]: Abstraction has 13586 states and 18840 transitions. [2020-10-13 08:34:33,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 13586 states and 18840 transitions. [2020-10-13 08:34:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-13 08:34:33,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:33,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:34:33,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:34:33,889 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:33,890 INFO L82 PathProgramCache]: Analyzing trace with hash -859024036, now seen corresponding path program 1 times [2020-10-13 08:34:33,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:33,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809203177] [2020-10-13 08:34:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:35,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:35,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 08:34:35,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:34:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1390 [2020-10-13 08:34:35,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 203 [2020-10-13 08:34:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 08:34:35,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:35,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:35,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:35,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:34:35,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:35,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:35,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 08:34:35,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:35,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 08:34:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 08:34:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:34:35,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809203177] [2020-10-13 08:34:35,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:35,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:34:35,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565406558] [2020-10-13 08:34:35,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:35,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:35,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:35,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:35,858 INFO L87 Difference]: Start difference. First operand 13586 states and 18840 transitions. Second operand 5 states. [2020-10-13 08:35:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:04,170 INFO L93 Difference]: Finished difference Result 39503 states and 55683 transitions. [2020-10-13 08:35:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:04,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-13 08:35:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:04,286 INFO L225 Difference]: With dead ends: 39503 [2020-10-13 08:35:04,287 INFO L226 Difference]: Without dead ends: 25923 [2020-10-13 08:35:04,318 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 08:35:04,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25923 states. [2020-10-13 08:35:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25923 to 25814. [2020-10-13 08:35:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25814 states. [2020-10-13 08:35:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25814 states to 25814 states and 36315 transitions. [2020-10-13 08:35:04,890 INFO L78 Accepts]: Start accepts. Automaton has 25814 states and 36315 transitions. Word has length 225 [2020-10-13 08:35:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:04,891 INFO L479 AbstractCegarLoop]: Abstraction has 25814 states and 36315 transitions. [2020-10-13 08:35:04,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 25814 states and 36315 transitions. [2020-10-13 08:35:04,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 08:35:04,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:04,902 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:04,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:35:04,903 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:04,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:04,903 INFO L82 PathProgramCache]: Analyzing trace with hash -371842474, now seen corresponding path program 1 times [2020-10-13 08:35:04,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:04,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104538658] [2020-10-13 08:35:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:07,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:09,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:09,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 08:35:09,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:35:09,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 08:35:09,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 228 [2020-10-13 08:35:09,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 08:35:09,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:10,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:10,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:10,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:35:10,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:10,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:10,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:10,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:10,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:35:10,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 08:35:10,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:10,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:10,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:10,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:35:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:10,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:10,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-13 08:35:10,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 08:35:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 08:35:10,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:35:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-13 08:35:10,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104538658] [2020-10-13 08:35:10,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:10,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:10,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712590844] [2020-10-13 08:35:10,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:10,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:10,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:10,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:10,489 INFO L87 Difference]: Start difference. First operand 25814 states and 36315 transitions. Second operand 5 states.