/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/Problem15_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:01:10,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:01:10,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:01:10,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:01:10,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:01:10,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:01:10,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:01:10,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:01:10,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:01:10,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:01:10,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:01:10,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:01:10,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:01:10,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:01:10,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:01:10,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:01:10,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:01:10,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:01:10,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:01:10,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:01:10,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:01:10,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:01:10,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:01:10,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:01:10,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:01:10,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:01:10,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:01:10,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:01:10,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:01:10,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:01:10,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:01:10,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:01:10,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:01:10,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:01:10,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:01:10,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:01:10,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:01:10,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:01:10,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:01:10,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:01:10,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:01:10,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:01:10,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:01:10,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:01:10,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:01:10,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:01:10,166 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:01:10,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:01:10,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:01:10,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:01:10,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:01:10,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:01:10,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:01:10,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:01:10,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:01:10,168 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:01:10,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:01:10,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:01:10,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:01:10,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:01:10,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:01:10,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:01:10,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:01:10,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:01:10,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:01:10,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:01:10,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:01:10,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:01:10,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:01:10,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:01:10,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:01:10,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:01:10,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:01:10,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:01:10,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:01:10,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:01:10,549 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:01:10,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-13 09:01:10,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/375f73914/fb22a1050e9f4c728bd83470827f75c5/FLAGe80a9164c [2020-10-13 09:01:11,329 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:01:11,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label19.c [2020-10-13 09:01:11,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/375f73914/fb22a1050e9f4c728bd83470827f75c5/FLAGe80a9164c [2020-10-13 09:01:11,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/375f73914/fb22a1050e9f4c728bd83470827f75c5 [2020-10-13 09:01:11,516 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:01:11,518 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:01:11,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:01:11,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:01:11,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:01:11,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:11" (1/1) ... [2020-10-13 09:01:11,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:11, skipping insertion in model container [2020-10-13 09:01:11,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:11" (1/1) ... [2020-10-13 09:01:11,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:01:11,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:01:12,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:01:12,598 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:01:12,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:01:12,905 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:01:12,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12 WrapperNode [2020-10-13 09:01:12,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:01:12,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:01:12,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:01:12,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:01:12,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... [2020-10-13 09:01:12,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... [2020-10-13 09:01:12,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... [2020-10-13 09:01:12,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... [2020-10-13 09:01:13,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... [2020-10-13 09:01:13,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... [2020-10-13 09:01:13,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... [2020-10-13 09:01:13,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:01:13,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:01:13,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:01:13,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:01:13,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:01:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:01:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:01:13,208 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:01:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:01:13,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:01:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:01:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:01:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:01:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:01:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:01:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:01:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:01:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:01:19,221 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:01:19,222 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:01:19,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:19 BoogieIcfgContainer [2020-10-13 09:01:19,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:01:19,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:01:19,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:01:19,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:01:19,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:01:11" (1/3) ... [2020-10-13 09:01:19,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15364011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:19, skipping insertion in model container [2020-10-13 09:01:19,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:12" (2/3) ... [2020-10-13 09:01:19,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15364011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:19, skipping insertion in model container [2020-10-13 09:01:19,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:19" (3/3) ... [2020-10-13 09:01:19,257 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label19.c [2020-10-13 09:01:19,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:01:19,283 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:01:19,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:01:19,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:01:19,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:01:19,337 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:01:19,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:01:19,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:01:19,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:01:19,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:01:19,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:01:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:01:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 09:01:19,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:19,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:19,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:19,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:19,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1728507445, now seen corresponding path program 1 times [2020-10-13 09:01:19,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:19,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073872566] [2020-10-13 09:01:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:20,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:20,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 09:01:20,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:20,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-10-13 09:01:20,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:01:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:01:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 09:01:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 09:01:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:20,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:20,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:20,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:20,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:01:20,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:01:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:20,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073872566] [2020-10-13 09:01:20,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:01:20,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:01:20,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731817100] [2020-10-13 09:01:20,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:01:20,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:20,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:01:20,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:01:20,384 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:01:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:26,261 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-13 09:01:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:26,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-13 09:01:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:26,286 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 09:01:26,287 INFO L226 Difference]: Without dead ends: 697 [2020-10-13 09:01:26,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-13 09:01:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-13 09:01:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:01:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-13 09:01:26,401 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 51 [2020-10-13 09:01:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:26,402 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-13 09:01:26,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:01:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-13 09:01:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 09:01:26,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:26,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:26,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:01:26,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:26,411 INFO L82 PathProgramCache]: Analyzing trace with hash 882457234, now seen corresponding path program 1 times [2020-10-13 09:01:26,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:26,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291209631] [2020-10-13 09:01:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:26,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:27,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:29,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:29,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 09:01:29,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:01:29,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2951 [2020-10-13 09:01:29,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 09:01:29,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:01:29,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 09:01:29,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:01:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:01:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:29,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:29,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:29,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:01:29,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 09:01:29,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 09:01:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:29,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291209631] [2020-10-13 09:01:29,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:29,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:01:29,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517526800] [2020-10-13 09:01:29,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:01:29,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:29,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:01:29,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:01:29,969 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-13 09:01:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:38,915 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-13 09:01:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:01:38,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-13 09:01:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:38,927 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 09:01:38,928 INFO L226 Difference]: Without dead ends: 695 [2020-10-13 09:01:38,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:01:38,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-13 09:01:38,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-13 09:01:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 09:01:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-13 09:01:38,982 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 120 [2020-10-13 09:01:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:38,983 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-13 09:01:38,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:01:38,983 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-13 09:01:38,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 09:01:38,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:38,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:38,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:01:38,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:38,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:38,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1032883849, now seen corresponding path program 1 times [2020-10-13 09:01:38,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:38,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499269002] [2020-10-13 09:01:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:40,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:40,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 09:01:40,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:01:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-10-13 09:01:40,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:40,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 09:01:40,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:01:40,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:40,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:40,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:40,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:40,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 09:01:40,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:40,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:40,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:40,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:01:40,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:40,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:01:40,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:40,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:40,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:01:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:40,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499269002] [2020-10-13 09:01:40,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:40,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:40,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835946713] [2020-10-13 09:01:40,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:40,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:40,650 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 5 states. [2020-10-13 09:01:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:48,470 INFO L93 Difference]: Finished difference Result 2010 states and 2715 transitions. [2020-10-13 09:01:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:48,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-13 09:01:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:48,498 INFO L225 Difference]: With dead ends: 2010 [2020-10-13 09:01:48,498 INFO L226 Difference]: Without dead ends: 1325 [2020-10-13 09:01:48,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-10-13 09:01:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1321. [2020-10-13 09:01:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-10-13 09:01:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1609 transitions. [2020-10-13 09:01:48,552 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1609 transitions. Word has length 131 [2020-10-13 09:01:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:48,553 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1609 transitions. [2020-10-13 09:01:48,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1609 transitions. [2020-10-13 09:01:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 09:01:48,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:48,557 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:48,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:01:48,558 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:48,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:48,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1774581127, now seen corresponding path program 1 times [2020-10-13 09:01:48,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:48,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838417970] [2020-10-13 09:01:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:48,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:49,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:49,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 09:01:49,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:01:49,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-10-13 09:01:49,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:01:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:01:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:49,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:49,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:49,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:01:49,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:49,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:49,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 09:01:49,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:01:49,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:49,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:01:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:49,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838417970] [2020-10-13 09:01:49,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:49,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:49,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649330093] [2020-10-13 09:01:49,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:49,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:49,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:49,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:49,883 INFO L87 Difference]: Start difference. First operand 1321 states and 1609 transitions. Second operand 5 states. [2020-10-13 09:01:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:57,043 INFO L93 Difference]: Finished difference Result 3273 states and 4097 transitions. [2020-10-13 09:01:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:57,045 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 09:01:57,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:57,057 INFO L225 Difference]: With dead ends: 3273 [2020-10-13 09:01:57,057 INFO L226 Difference]: Without dead ends: 1958 [2020-10-13 09:01:57,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2020-10-13 09:01:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1951. [2020-10-13 09:01:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-10-13 09:01:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2305 transitions. [2020-10-13 09:01:57,126 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2305 transitions. Word has length 136 [2020-10-13 09:01:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:57,128 INFO L479 AbstractCegarLoop]: Abstraction has 1951 states and 2305 transitions. [2020-10-13 09:01:57,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:01:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2305 transitions. [2020-10-13 09:01:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-13 09:01:57,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:57,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:57,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:01:57,134 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:57,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:57,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1144324563, now seen corresponding path program 1 times [2020-10-13 09:01:57,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:57,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448246416] [2020-10-13 09:01:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:57,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:57,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:58,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-13 09:01:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:01:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-13 09:01:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-13 09:01:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 09:01:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:58,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:58,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:01:58,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:58,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:58,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:01:58,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 09:01:58,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:58,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:01:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:58,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448246416] [2020-10-13 09:01:58,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:58,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:01:58,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74562549] [2020-10-13 09:01:58,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:01:58,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:58,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:01:58,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:58,257 INFO L87 Difference]: Start difference. First operand 1951 states and 2305 transitions. Second operand 5 states. [2020-10-13 09:02:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:05,168 INFO L93 Difference]: Finished difference Result 4888 states and 5937 transitions. [2020-10-13 09:02:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:05,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-13 09:02:05,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:05,187 INFO L225 Difference]: With dead ends: 4888 [2020-10-13 09:02:05,188 INFO L226 Difference]: Without dead ends: 2943 [2020-10-13 09:02:05,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:02:05,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2020-10-13 09:02:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 2934. [2020-10-13 09:02:05,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-10-13 09:02:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3565 transitions. [2020-10-13 09:02:05,276 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3565 transitions. Word has length 137 [2020-10-13 09:02:05,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:05,276 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3565 transitions. [2020-10-13 09:02:05,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:05,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3565 transitions. [2020-10-13 09:02:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 09:02:05,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:05,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:05,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:02:05,280 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:05,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1329965876, now seen corresponding path program 1 times [2020-10-13 09:02:05,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:05,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362521212] [2020-10-13 09:02:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:05,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:05,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 09:02:05,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:05,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 09:02:05,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:02:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:02:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 09:02:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:05,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:05,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:05,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:02:05,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:05,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:05,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:05,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:02:05,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:05,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:02:05,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:05,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:02:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:05,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362521212] [2020-10-13 09:02:05,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:02:05,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:02:05,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626569275] [2020-10-13 09:02:05,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:05,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:05,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:05,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:05,943 INFO L87 Difference]: Start difference. First operand 2934 states and 3565 transitions. Second operand 7 states. [2020-10-13 09:02:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:15,114 INFO L93 Difference]: Finished difference Result 6853 states and 8603 transitions. [2020-10-13 09:02:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:02:15,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-13 09:02:15,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:15,144 INFO L225 Difference]: With dead ends: 6853 [2020-10-13 09:02:15,145 INFO L226 Difference]: Without dead ends: 3925 [2020-10-13 09:02:15,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:02:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2020-10-13 09:02:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3900. [2020-10-13 09:02:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3900 states. [2020-10-13 09:02:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 4652 transitions. [2020-10-13 09:02:15,273 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 4652 transitions. Word has length 142 [2020-10-13 09:02:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:15,273 INFO L479 AbstractCegarLoop]: Abstraction has 3900 states and 4652 transitions. [2020-10-13 09:02:15,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 4652 transitions. [2020-10-13 09:02:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-13 09:02:15,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:15,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:15,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:02:15,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1544909855, now seen corresponding path program 1 times [2020-10-13 09:02:15,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:15,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192002443] [2020-10-13 09:02:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:15,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:16,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:17,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:17,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-13 09:02:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:02:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2283 [2020-10-13 09:02:17,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 09:02:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:02:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-13 09:02:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:17,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:17,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 09:02:17,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:17,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:18,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:18,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-13 09:02:18,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-13 09:02:18,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:18,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:02:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-13 09:02:18,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:02:19,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192002443] [2020-10-13 09:02:19,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:19,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:02:19,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317872663] [2020-10-13 09:02:19,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:02:19,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:19,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:02:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:02:19,238 INFO L87 Difference]: Start difference. First operand 3900 states and 4652 transitions. Second operand 8 states. [2020-10-13 09:02:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:30,330 INFO L93 Difference]: Finished difference Result 8153 states and 9675 transitions. [2020-10-13 09:02:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:02:30,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-13 09:02:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:30,352 INFO L225 Difference]: With dead ends: 8153 [2020-10-13 09:02:30,353 INFO L226 Difference]: Without dead ends: 4222 [2020-10-13 09:02:30,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:02:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2020-10-13 09:02:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 4211. [2020-10-13 09:02:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4211 states. [2020-10-13 09:02:30,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 4970 transitions. [2020-10-13 09:02:30,514 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 4970 transitions. Word has length 288 [2020-10-13 09:02:30,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:30,514 INFO L479 AbstractCegarLoop]: Abstraction has 4211 states and 4970 transitions. [2020-10-13 09:02:30,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:02:30,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 4970 transitions. [2020-10-13 09:02:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-13 09:02:30,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:30,522 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:02:30,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:02:30,523 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:30,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:30,524 INFO L82 PathProgramCache]: Analyzing trace with hash -2081445143, now seen corresponding path program 1 times [2020-10-13 09:02:30,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:30,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738511849] [2020-10-13 09:02:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:30,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:30,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:34,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:34,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-13 09:02:34,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:02:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3624 [2020-10-13 09:02:34,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:02:34,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 09:02:34,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:34,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:34,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:34,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:34,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:34,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:02:34,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:34,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:34,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:34,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:02:34,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-13 09:02:34,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:02:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:34,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:02:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:35,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:35,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:02:35,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:35,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-13 09:02:35,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:35,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:35,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:35,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:02:35,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:02:35,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738511849] [2020-10-13 09:02:35,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:35,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:02:35,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952620755] [2020-10-13 09:02:35,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:35,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:35,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:35,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:35,419 INFO L87 Difference]: Start difference. First operand 4211 states and 4970 transitions. Second operand 7 states. [2020-10-13 09:02:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:48,407 INFO L93 Difference]: Finished difference Result 11666 states and 14185 transitions. [2020-10-13 09:02:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:02:48,408 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-13 09:02:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:48,442 INFO L225 Difference]: With dead ends: 11666 [2020-10-13 09:02:48,442 INFO L226 Difference]: Without dead ends: 7768 [2020-10-13 09:02:48,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:02:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7768 states. [2020-10-13 09:02:48,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7768 to 7402. [2020-10-13 09:02:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2020-10-13 09:02:48,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 8979 transitions. [2020-10-13 09:02:48,637 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 8979 transitions. Word has length 342 [2020-10-13 09:02:48,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:48,638 INFO L479 AbstractCegarLoop]: Abstraction has 7402 states and 8979 transitions. [2020-10-13 09:02:48,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:48,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 8979 transitions. [2020-10-13 09:02:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-13 09:02:48,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:48,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:02:48,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:02:48,648 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:48,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1311910888, now seen corresponding path program 1 times [2020-10-13 09:02:48,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:48,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151690692] [2020-10-13 09:02:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:51,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-13 09:02:51,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:02:51,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3066 [2020-10-13 09:02:51,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:02:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:02:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-13 09:02:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:51,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:51,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:51,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:51,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:02:51,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:51,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:52,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:52,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:52,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:02:52,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:52,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-13 09:02:52,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:52,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-13 09:02:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:02:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:52,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:52,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 09:02:52,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:52,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 09:02:52,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 09:02:52,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:52,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 88 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 09:02:52,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151690692] [2020-10-13 09:02:52,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:52,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:02:52,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786120863] [2020-10-13 09:02:52,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:02:52,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:02:52,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:02:52,887 INFO L87 Difference]: Start difference. First operand 7402 states and 8979 transitions. Second operand 8 states. [2020-10-13 09:03:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:03,364 INFO L93 Difference]: Finished difference Result 14543 states and 17744 transitions. [2020-10-13 09:03:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:03:03,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 354 [2020-10-13 09:03:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:03,397 INFO L225 Difference]: With dead ends: 14543 [2020-10-13 09:03:03,397 INFO L226 Difference]: Without dead ends: 7454 [2020-10-13 09:03:03,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:03:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2020-10-13 09:03:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7432. [2020-10-13 09:03:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7432 states. [2020-10-13 09:03:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 9036 transitions. [2020-10-13 09:03:03,571 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 9036 transitions. Word has length 354 [2020-10-13 09:03:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:03,571 INFO L479 AbstractCegarLoop]: Abstraction has 7432 states and 9036 transitions. [2020-10-13 09:03:03,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:03:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 9036 transitions. [2020-10-13 09:03:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-13 09:03:03,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:03,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:03:03,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:03:03,581 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1088812881, now seen corresponding path program 1 times [2020-10-13 09:03:03,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:03,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783142564] [2020-10-13 09:03:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:03,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-13 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2439 [2020-10-13 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-13 09:03:06,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:03:06,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:06,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:06,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:06,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:03:06,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:03:06,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:06,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:03:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:06,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:03:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:03:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:03:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 09:03:06,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783142564] [2020-10-13 09:03:06,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:06,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:06,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127100337] [2020-10-13 09:03:06,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:06,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:06,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:06,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:06,863 INFO L87 Difference]: Start difference. First operand 7432 states and 9036 transitions. Second operand 5 states. [2020-10-13 09:03:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:14,847 INFO L93 Difference]: Finished difference Result 17154 states and 21264 transitions. [2020-10-13 09:03:14,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:14,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 436 [2020-10-13 09:03:14,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:14,891 INFO L225 Difference]: With dead ends: 17154 [2020-10-13 09:03:14,891 INFO L226 Difference]: Without dead ends: 10035 [2020-10-13 09:03:14,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10035 states. [2020-10-13 09:03:15,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10035 to 10005. [2020-10-13 09:03:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10005 states. [2020-10-13 09:03:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10005 states to 10005 states and 12337 transitions. [2020-10-13 09:03:15,112 INFO L78 Accepts]: Start accepts. Automaton has 10005 states and 12337 transitions. Word has length 436 [2020-10-13 09:03:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:15,113 INFO L479 AbstractCegarLoop]: Abstraction has 10005 states and 12337 transitions. [2020-10-13 09:03:15,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10005 states and 12337 transitions. [2020-10-13 09:03:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-10-13 09:03:15,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:15,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:15,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:03:15,125 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:15,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:15,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1552734779, now seen corresponding path program 1 times [2020-10-13 09:03:15,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:15,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18219223] [2020-10-13 09:03:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:15,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:18,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-13 09:03:18,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2912 [2020-10-13 09:03:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:03:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 09:03:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:18,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:18,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:18,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:18,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:18,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:03:18,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:18,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:18,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:18,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:18,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:03:18,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-13 09:03:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 09:03:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:19,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:03:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:19,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:19,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:19,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:03:19,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:19,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-13 09:03:19,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:19,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-13 09:03:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:03:20,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18219223] [2020-10-13 09:03:20,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:20,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:03:20,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434988133] [2020-10-13 09:03:20,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:03:20,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:20,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:03:20,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:03:20,024 INFO L87 Difference]: Start difference. First operand 10005 states and 12337 transitions. Second operand 7 states. [2020-10-13 09:03:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:30,923 INFO L93 Difference]: Finished difference Result 20745 states and 25746 transitions. [2020-10-13 09:03:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 09:03:30,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 472 [2020-10-13 09:03:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:30,985 INFO L225 Difference]: With dead ends: 20745 [2020-10-13 09:03:30,985 INFO L226 Difference]: Without dead ends: 11053 [2020-10-13 09:03:31,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:03:31,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11053 states. [2020-10-13 09:03:31,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11053 to 10981. [2020-10-13 09:03:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10981 states. [2020-10-13 09:03:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10981 states to 10981 states and 13495 transitions. [2020-10-13 09:03:31,317 INFO L78 Accepts]: Start accepts. Automaton has 10981 states and 13495 transitions. Word has length 472 [2020-10-13 09:03:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:31,318 INFO L479 AbstractCegarLoop]: Abstraction has 10981 states and 13495 transitions. [2020-10-13 09:03:31,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:03:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 10981 states and 13495 transitions. [2020-10-13 09:03:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-13 09:03:31,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:31,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:03:31,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:03:31,337 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1753482893, now seen corresponding path program 1 times [2020-10-13 09:03:31,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:31,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308033479] [2020-10-13 09:03:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:34,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:34,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-13 09:03:34,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:03:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2719 [2020-10-13 09:03:34,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 09:03:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:03:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-13 09:03:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:34,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:03:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:03:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:34,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:34,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:34,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:34,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:03:34,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-13 09:03:34,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-13 09:03:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:35,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:03:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:35,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:35,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:35,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 09:03:35,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-13 09:03:35,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:03:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-13 09:03:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:03:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 20 proven. 71 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-13 09:03:36,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308033479] [2020-10-13 09:03:36,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:36,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:03:36,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384981135] [2020-10-13 09:03:36,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:03:36,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:36,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:03:36,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:03:36,081 INFO L87 Difference]: Start difference. First operand 10981 states and 13495 transitions. Second operand 8 states. [2020-10-13 09:03:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:50,225 INFO L93 Difference]: Finished difference Result 23426 states and 28767 transitions. [2020-10-13 09:03:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:03:50,227 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 484 [2020-10-13 09:03:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:50,269 INFO L225 Difference]: With dead ends: 23426 [2020-10-13 09:03:50,269 INFO L226 Difference]: Without dead ends: 12676 [2020-10-13 09:03:50,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:03:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12676 states. [2020-10-13 09:03:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12676 to 12600. [2020-10-13 09:03:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12600 states. [2020-10-13 09:03:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 15270 transitions. [2020-10-13 09:03:50,578 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 15270 transitions. Word has length 484 [2020-10-13 09:03:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:50,579 INFO L479 AbstractCegarLoop]: Abstraction has 12600 states and 15270 transitions. [2020-10-13 09:03:50,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:03:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 15270 transitions. [2020-10-13 09:03:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-13 09:03:50,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:50,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:50,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:03:50,594 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:50,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:50,595 INFO L82 PathProgramCache]: Analyzing trace with hash 820139963, now seen corresponding path program 1 times [2020-10-13 09:03:50,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:50,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368259716] [2020-10-13 09:03:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:52,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:53,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:53,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-13 09:03:53,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3141 [2020-10-13 09:03:53,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 483 [2020-10-13 09:03:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 09:03:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:54,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:54,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:54,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:54,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:03:54,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:54,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:54,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:54,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:54,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:03:54,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:54,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:03:54,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:54,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:54,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:54,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:54,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:03:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:54,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:03:54,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:54,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 09:03:54,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:54,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:03:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:54,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 09:03:54,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:54,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:03:54,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 09:03:54,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-13 09:03:54,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368259716] [2020-10-13 09:03:54,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:54,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:54,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887410175] [2020-10-13 09:03:54,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:54,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:54,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:54,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:54,660 INFO L87 Difference]: Start difference. First operand 12600 states and 15270 transitions. Second operand 5 states. [2020-10-13 09:04:00,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:00,500 INFO L93 Difference]: Finished difference Result 23367 states and 28649 transitions. [2020-10-13 09:04:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:00,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 520 [2020-10-13 09:04:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:00,558 INFO L225 Difference]: With dead ends: 23367 [2020-10-13 09:04:00,558 INFO L226 Difference]: Without dead ends: 12614 [2020-10-13 09:04:00,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2020-10-13 09:04:00,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12598. [2020-10-13 09:04:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12598 states. [2020-10-13 09:04:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12598 states to 12598 states and 15243 transitions. [2020-10-13 09:04:01,009 INFO L78 Accepts]: Start accepts. Automaton has 12598 states and 15243 transitions. Word has length 520 [2020-10-13 09:04:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:01,010 INFO L479 AbstractCegarLoop]: Abstraction has 12598 states and 15243 transitions. [2020-10-13 09:04:01,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 12598 states and 15243 transitions. [2020-10-13 09:04:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-10-13 09:04:01,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:01,023 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:01,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:04:01,024 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:01,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:01,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1239877827, now seen corresponding path program 1 times [2020-10-13 09:04:01,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:01,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547831536] [2020-10-13 09:04:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:02,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:02,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:02,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 538 [2020-10-13 09:04:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1497 [2020-10-13 09:04:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 487 [2020-10-13 09:04:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 09:04:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:02,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:02,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:02,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:02,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:02,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:02,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:02,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:03,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:03,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:04:03,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:04:03,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:03,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:03,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:04:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:03,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:03,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:03,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:03,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:04:03,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:03,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:03,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:03,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:04:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:03,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:03,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:03,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:04:03,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:03,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 09:04:03,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 09:04:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2020-10-13 09:04:03,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547831536] [2020-10-13 09:04:03,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:03,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:03,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015815817] [2020-10-13 09:04:03,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:03,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:03,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:03,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:03,497 INFO L87 Difference]: Start difference. First operand 12598 states and 15243 transitions. Second operand 5 states. [2020-10-13 09:04:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:10,815 INFO L93 Difference]: Finished difference Result 23361 states and 28666 transitions. [2020-10-13 09:04:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:10,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 524 [2020-10-13 09:04:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:10,847 INFO L225 Difference]: With dead ends: 23361 [2020-10-13 09:04:10,847 INFO L226 Difference]: Without dead ends: 12614 [2020-10-13 09:04:10,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:04:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2020-10-13 09:04:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12598. [2020-10-13 09:04:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12598 states. [2020-10-13 09:04:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12598 states to 12598 states and 15227 transitions. [2020-10-13 09:04:11,117 INFO L78 Accepts]: Start accepts. Automaton has 12598 states and 15227 transitions. Word has length 524 [2020-10-13 09:04:11,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:11,118 INFO L479 AbstractCegarLoop]: Abstraction has 12598 states and 15227 transitions. [2020-10-13 09:04:11,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 12598 states and 15227 transitions. [2020-10-13 09:04:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-13 09:04:11,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:11,126 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:11,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:04:11,127 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:11,127 INFO L82 PathProgramCache]: Analyzing trace with hash -709670585, now seen corresponding path program 1 times [2020-10-13 09:04:11,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:11,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756450013] [2020-10-13 09:04:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:11,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:11,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-13 09:04:14,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2726 [2020-10-13 09:04:14,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 489 [2020-10-13 09:04:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 09:04:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:14,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:14,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:14,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:04:14,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:04:14,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:14,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:04:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:14,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:04:14,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:04:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:14,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:14,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 09:04:14,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 09:04:14,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:14,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 09:04:14,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 09:04:15,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756450013] [2020-10-13 09:04:15,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:15,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:04:15,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011590807] [2020-10-13 09:04:15,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:04:15,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:04:15,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:15,313 INFO L87 Difference]: Start difference. First operand 12598 states and 15227 transitions. Second operand 6 states. [2020-10-13 09:04:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:23,049 INFO L93 Difference]: Finished difference Result 23372 states and 28582 transitions. [2020-10-13 09:04:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:23,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 526 [2020-10-13 09:04:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:23,086 INFO L225 Difference]: With dead ends: 23372 [2020-10-13 09:04:23,086 INFO L226 Difference]: Without dead ends: 12614 [2020-10-13 09:04:23,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2020-10-13 09:04:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12598. [2020-10-13 09:04:23,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12598 states. [2020-10-13 09:04:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12598 states to 12598 states and 15215 transitions. [2020-10-13 09:04:23,345 INFO L78 Accepts]: Start accepts. Automaton has 12598 states and 15215 transitions. Word has length 526 [2020-10-13 09:04:23,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:23,346 INFO L479 AbstractCegarLoop]: Abstraction has 12598 states and 15215 transitions. [2020-10-13 09:04:23,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:04:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12598 states and 15215 transitions. [2020-10-13 09:04:23,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-13 09:04:23,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:23,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:23,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:04:23,355 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1867277745, now seen corresponding path program 1 times [2020-10-13 09:04:23,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:23,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475047943] [2020-10-13 09:04:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 544 [2020-10-13 09:04:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2099 [2020-10-13 09:04:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-13 09:04:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:04:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:25,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:25,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:25,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:25,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:25,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:25,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:04:25,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:04:25,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:25,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:25,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:26,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:04:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:26,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:26,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:26,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:26,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:04:26,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:04:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:26,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:04:26,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 09:04:26,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:26,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 09:04:26,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-13 09:04:26,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475047943] [2020-10-13 09:04:26,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:26,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:04:26,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483821386] [2020-10-13 09:04:26,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:04:26,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:26,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:04:26,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:04:26,851 INFO L87 Difference]: Start difference. First operand 12598 states and 15215 transitions. Second operand 5 states. [2020-10-13 09:04:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:35,313 INFO L93 Difference]: Finished difference Result 23355 states and 28608 transitions. [2020-10-13 09:04:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:35,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 530 [2020-10-13 09:04:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:35,359 INFO L225 Difference]: With dead ends: 23355 [2020-10-13 09:04:35,359 INFO L226 Difference]: Without dead ends: 12614 [2020-10-13 09:04:35,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 09:04:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12614 states. [2020-10-13 09:04:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12614 to 12598. [2020-10-13 09:04:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12598 states. [2020-10-13 09:04:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12598 states to 12598 states and 15203 transitions. [2020-10-13 09:04:35,660 INFO L78 Accepts]: Start accepts. Automaton has 12598 states and 15203 transitions. Word has length 530 [2020-10-13 09:04:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:35,661 INFO L479 AbstractCegarLoop]: Abstraction has 12598 states and 15203 transitions. [2020-10-13 09:04:35,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12598 states and 15203 transitions. [2020-10-13 09:04:35,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-13 09:04:35,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:35,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:35,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:04:35,677 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:35,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1442858899, now seen corresponding path program 1 times [2020-10-13 09:04:35,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:35,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080416188] [2020-10-13 09:04:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:35,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:37,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:37,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-13 09:04:37,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:04:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-13 09:04:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 494 [2020-10-13 09:04:37,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 09:04:37,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:38,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:04:38,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:38,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 09:04:38,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-13 09:04:38,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:38,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:04:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:38,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-13 09:04:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:38,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:38,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:04:38,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 09:04:38,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:38,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 09:04:38,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 135 proven. 3 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-13 09:04:38,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080416188] [2020-10-13 09:04:38,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:38,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:04:38,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448832600] [2020-10-13 09:04:38,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:04:38,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:38,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:04:38,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:38,666 INFO L87 Difference]: Start difference. First operand 12598 states and 15203 transitions. Second operand 6 states. [2020-10-13 09:04:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:51,674 INFO L93 Difference]: Finished difference Result 28330 states and 35457 transitions. [2020-10-13 09:04:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:04:51,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 531 [2020-10-13 09:04:51,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:51,710 INFO L225 Difference]: With dead ends: 28330 [2020-10-13 09:04:51,711 INFO L226 Difference]: Without dead ends: 16045 [2020-10-13 09:04:51,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:04:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16045 states. [2020-10-13 09:04:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16045 to 16017. [2020-10-13 09:04:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16017 states. [2020-10-13 09:04:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16017 states to 16017 states and 19045 transitions. [2020-10-13 09:04:51,982 INFO L78 Accepts]: Start accepts. Automaton has 16017 states and 19045 transitions. Word has length 531 [2020-10-13 09:04:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:51,983 INFO L479 AbstractCegarLoop]: Abstraction has 16017 states and 19045 transitions. [2020-10-13 09:04:51,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:04:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16017 states and 19045 transitions. [2020-10-13 09:04:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-10-13 09:04:51,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:51,998 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:51,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 09:04:51,999 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:51,999 INFO L82 PathProgramCache]: Analyzing trace with hash 760006795, now seen corresponding path program 1 times [2020-10-13 09:04:51,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:52,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819747947] [2020-10-13 09:04:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:52,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking...