/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/Problem18_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:50:59,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:50:59,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:50:59,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:50:59,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:50:59,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:50:59,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:50:59,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:50:59,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:50:59,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:50:59,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:50:59,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:50:59,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:50:59,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:50:59,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:50:59,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:50:59,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:50:59,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:50:59,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:50:59,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:50:59,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:50:59,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:50:59,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:50:59,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:50:59,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:50:59,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:50:59,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:50:59,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:50:59,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:50:59,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:50:59,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:50:59,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:50:59,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:50:59,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:50:59,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:50:59,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:50:59,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:50:59,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:50:59,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:50:59,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:50:59,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:50:59,138 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 09:50:59,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:50:59,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:50:59,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:50:59,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:50:59,183 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:50:59,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:50:59,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:50:59,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:50:59,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:50:59,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:50:59,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:50:59,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:50:59,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:50:59,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:50:59,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:50:59,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:50:59,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:50:59,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:50:59,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:50:59,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:50:59,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:50:59,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:50:59,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:50:59,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:50:59,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:50:59,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:50:59,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:50:59,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:50:59,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:50:59,191 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 09:50:59,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:50:59,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:50:59,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:50:59,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:50:59,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:50:59,523 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36.c [2020-10-13 09:50:59,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27d4ea0ae/1125c8acf448457f8e0fed36d5f14b33/FLAGd1eb0b097 [2020-10-13 09:51:00,306 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:51:00,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label36.c [2020-10-13 09:51:00,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27d4ea0ae/1125c8acf448457f8e0fed36d5f14b33/FLAGd1eb0b097 [2020-10-13 09:51:00,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27d4ea0ae/1125c8acf448457f8e0fed36d5f14b33 [2020-10-13 09:51:00,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:51:00,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:51:00,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:51:00,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:51:00,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:51:00,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:51:00" (1/1) ... [2020-10-13 09:51:00,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c78ef90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:00, skipping insertion in model container [2020-10-13 09:51:00,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:51:00" (1/1) ... [2020-10-13 09:51:00,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:51:00,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:51:01,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:51:01,732 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:51:02,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:51:02,160 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:51:02,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02 WrapperNode [2020-10-13 09:51:02,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:51:02,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:51:02,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:51:02,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:51:02,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (1/1) ... [2020-10-13 09:51:02,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (1/1) ... [2020-10-13 09:51:02,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (1/1) ... [2020-10-13 09:51:02,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (1/1) ... [2020-10-13 09:51:02,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (1/1) ... [2020-10-13 09:51:02,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (1/1) ... [2020-10-13 09:51:02,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (1/1) ... [2020-10-13 09:51:02,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:51:02,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:51:02,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:51:02,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:51:02,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (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 09:51:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:51:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:51:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:51:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:51:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 09:51:02,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:51:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:51:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:51:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 09:51:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:51:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:51:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:51:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:51:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:51:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:51:08,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:51:08,390 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:51:08,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:51:08 BoogieIcfgContainer [2020-10-13 09:51:08,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:51:08,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:51:08,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:51:08,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:51:08,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:51:00" (1/3) ... [2020-10-13 09:51:08,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c29e0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:51:08, skipping insertion in model container [2020-10-13 09:51:08,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:51:02" (2/3) ... [2020-10-13 09:51:08,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c29e0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:51:08, skipping insertion in model container [2020-10-13 09:51:08,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:51:08" (3/3) ... [2020-10-13 09:51:08,408 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label36.c [2020-10-13 09:51:08,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:51:08,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:51:08,438 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:51:08,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:51:08,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:51:08,463 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:51:08,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:51:08,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:51:08,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:51:08,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:51:08,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:51:08,496 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-13 09:51:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 09:51:08,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:08,504 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] [2020-10-13 09:51:08,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:08,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:08,511 INFO L82 PathProgramCache]: Analyzing trace with hash -268856958, now seen corresponding path program 1 times [2020-10-13 09:51:08,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:08,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477004442] [2020-10-13 09:51:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:08,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:09,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 09:51:09,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:09,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-13 09:51:09,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:09,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:51:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:51:09,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 09:51:09,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 09:51:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:09,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:09,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:09,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:09,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:51:09,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:51:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:09,126 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 09:51:09,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477004442] [2020-10-13 09:51:09,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:51:09,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:51:09,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291861431] [2020-10-13 09:51:09,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:51:09,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:09,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:51:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:51:09,151 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-13 09:51:18,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:18,949 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-13 09:51:18,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:18,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-13 09:51:18,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:18,979 INFO L225 Difference]: With dead ends: 2270 [2020-10-13 09:51:18,979 INFO L226 Difference]: Without dead ends: 1432 [2020-10-13 09:51:18,992 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 09:51:19,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-13 09:51:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-13 09:51:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-13 09:51:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2020-10-13 09:51:19,118 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 33 [2020-10-13 09:51:19,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:19,119 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2020-10-13 09:51:19,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:51:19,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2020-10-13 09:51:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 09:51:19,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:19,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:19,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:51:19,125 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:19,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1613489274, now seen corresponding path program 1 times [2020-10-13 09:51:19,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:19,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241300492] [2020-10-13 09:51:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 09:51:19,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-13 09:51:19,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:51:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:51:19,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:20,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:20,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:20,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:20,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:51:20,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:20,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:20,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:20,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:51:20,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 09:51:20,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:20,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:20,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:51:20,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 09:51:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:20,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241300492] [2020-10-13 09:51:20,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:20,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:51:20,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235435648] [2020-10-13 09:51:20,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:51:20,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:20,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:51:20,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:51:20,343 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand 6 states. [2020-10-13 09:51:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:32,550 INFO L93 Difference]: Finished difference Result 4271 states and 7178 transitions. [2020-10-13 09:51:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:51:32,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-13 09:51:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:32,574 INFO L225 Difference]: With dead ends: 4271 [2020-10-13 09:51:32,575 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:51:32,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:51:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:51:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-13 09:51:32,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:51:32,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4329 transitions. [2020-10-13 09:51:32,654 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4329 transitions. Word has length 103 [2020-10-13 09:51:32,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:32,655 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4329 transitions. [2020-10-13 09:51:32,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:51:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4329 transitions. [2020-10-13 09:51:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-13 09:51:32,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:32,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:32,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:51:32,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:32,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:32,662 INFO L82 PathProgramCache]: Analyzing trace with hash 224689446, now seen corresponding path program 1 times [2020-10-13 09:51:32,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:32,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554769648] [2020-10-13 09:51:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:32,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:34,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:34,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-13 09:51:34,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:51:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-10-13 09:51:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:34,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-13 09:51:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 09:51:34,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:34,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:34,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:34,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:34,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:34,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:34,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:34,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:34,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:34,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-13 09:51:34,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 09:51:34,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:34,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:34,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-13 09:51:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:51:34,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554769648] [2020-10-13 09:51:34,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:34,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:34,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766400954] [2020-10-13 09:51:34,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:34,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:34,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:34,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:34,571 INFO L87 Difference]: Start difference. First operand 2848 states and 4329 transitions. Second operand 5 states. [2020-10-13 09:51:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:40,376 INFO L93 Difference]: Finished difference Result 5716 states and 8693 transitions. [2020-10-13 09:51:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:51:40,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-10-13 09:51:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:40,400 INFO L225 Difference]: With dead ends: 5716 [2020-10-13 09:51:40,400 INFO L226 Difference]: Without dead ends: 2852 [2020-10-13 09:51:40,406 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 09:51:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-13 09:51:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2848. [2020-10-13 09:51:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2848 states. [2020-10-13 09:51:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 4326 transitions. [2020-10-13 09:51:40,483 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 4326 transitions. Word has length 183 [2020-10-13 09:51:40,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:40,484 INFO L479 AbstractCegarLoop]: Abstraction has 2848 states and 4326 transitions. [2020-10-13 09:51:40,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:51:40,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 4326 transitions. [2020-10-13 09:51:40,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-13 09:51:40,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:40,490 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:51:40,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:51:40,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:40,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1452745981, now seen corresponding path program 1 times [2020-10-13 09:51:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:40,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098996973] [2020-10-13 09:51:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:40,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:43,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:43,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-13 09:51:43,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:51:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2804 [2020-10-13 09:51:43,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 09:51:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 09:51:43,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:43,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:43,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:43,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:43,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:43,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:43,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:43,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:43,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:43,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:43,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:43,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 09:51:43,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:43,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 09:51:43,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:43,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:43,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:51:43,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:51:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 09:51:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:43,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:43,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:43,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-13 09:51:43,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:51:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 09:51:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 09:51:43,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098996973] [2020-10-13 09:51:43,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:43,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:51:43,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297889611] [2020-10-13 09:51:43,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:51:43,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:43,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:51:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:51:43,796 INFO L87 Difference]: Start difference. First operand 2848 states and 4326 transitions. Second operand 7 states. [2020-10-13 09:51:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:51:53,279 INFO L93 Difference]: Finished difference Result 5788 states and 8796 transitions. [2020-10-13 09:51:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 09:51:53,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-13 09:51:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:51:53,297 INFO L225 Difference]: With dead ends: 5788 [2020-10-13 09:51:53,297 INFO L226 Difference]: Without dead ends: 2928 [2020-10-13 09:51:53,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 09:51:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2020-10-13 09:51:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2887. [2020-10-13 09:51:53,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2020-10-13 09:51:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4379 transitions. [2020-10-13 09:51:53,375 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 4379 transitions. Word has length 192 [2020-10-13 09:51:53,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:51:53,376 INFO L479 AbstractCegarLoop]: Abstraction has 2887 states and 4379 transitions. [2020-10-13 09:51:53,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:51:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 4379 transitions. [2020-10-13 09:51:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 09:51:53,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:51:53,379 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:51:53,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:51:53,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:51:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:51:53,380 INFO L82 PathProgramCache]: Analyzing trace with hash -368400161, now seen corresponding path program 1 times [2020-10-13 09:51:53,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:51:53,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158698223] [2020-10-13 09:51:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:51:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:53,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:54,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:54,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-13 09:51:54,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:51:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-10-13 09:51:54,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:51:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-13 09:51:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:51:54,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:54,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:51:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:54,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:54,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:54,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:51:54,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:51:54,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:51:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:54,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:51:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 09:51:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:51:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:54,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:51:54,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:51:54,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:51:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:51:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:51:54,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:51:54,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:51:54,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:51:54,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:51:54,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:51:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:51:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:51:54,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 09:51:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:51:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 09:51:54,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158698223] [2020-10-13 09:51:54,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:51:54,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:51:54,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659332789] [2020-10-13 09:51:54,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:51:54,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:51:54,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:51:54,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:51:54,563 INFO L87 Difference]: Start difference. First operand 2887 states and 4379 transitions. Second operand 5 states. [2020-10-13 09:52:04,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:04,207 INFO L93 Difference]: Finished difference Result 8670 states and 13355 transitions. [2020-10-13 09:52:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:04,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-13 09:52:04,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:04,232 INFO L225 Difference]: With dead ends: 8670 [2020-10-13 09:52:04,233 INFO L226 Difference]: Without dead ends: 5789 [2020-10-13 09:52:04,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5789 states. [2020-10-13 09:52:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5789 to 5777. [2020-10-13 09:52:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5777 states. [2020-10-13 09:52:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 7919 transitions. [2020-10-13 09:52:04,361 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 7919 transitions. Word has length 194 [2020-10-13 09:52:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:04,362 INFO L479 AbstractCegarLoop]: Abstraction has 5777 states and 7919 transitions. [2020-10-13 09:52:04,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 7919 transitions. [2020-10-13 09:52:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-13 09:52:04,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:04,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:04,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:52:04,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:04,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:04,367 INFO L82 PathProgramCache]: Analyzing trace with hash -53362474, now seen corresponding path program 1 times [2020-10-13 09:52:04,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:04,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427782465] [2020-10-13 09:52:04,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:04,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 09:52:05,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1043 [2020-10-13 09:52:05,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-13 09:52:05,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:52:05,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:05,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:05,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:05,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:05,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 09:52:05,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 09:52:05,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:05,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 09:52:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:05,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427782465] [2020-10-13 09:52:05,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:05,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:05,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395083596] [2020-10-13 09:52:05,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:05,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:05,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:05,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:05,802 INFO L87 Difference]: Start difference. First operand 5777 states and 7919 transitions. Second operand 5 states. [2020-10-13 09:52:15,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:15,291 INFO L93 Difference]: Finished difference Result 17286 states and 24079 transitions. [2020-10-13 09:52:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:15,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-13 09:52:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:15,338 INFO L225 Difference]: With dead ends: 17286 [2020-10-13 09:52:15,339 INFO L226 Difference]: Without dead ends: 11515 [2020-10-13 09:52:15,356 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 09:52:15,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11515 states. [2020-10-13 09:52:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11515 to 11506. [2020-10-13 09:52:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11506 states. [2020-10-13 09:52:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11506 states to 11506 states and 14623 transitions. [2020-10-13 09:52:15,591 INFO L78 Accepts]: Start accepts. Automaton has 11506 states and 14623 transitions. Word has length 207 [2020-10-13 09:52:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:15,592 INFO L479 AbstractCegarLoop]: Abstraction has 11506 states and 14623 transitions. [2020-10-13 09:52:15,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 11506 states and 14623 transitions. [2020-10-13 09:52:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 09:52:15,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:15,597 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:52:15,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:52:15,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash -665829405, now seen corresponding path program 1 times [2020-10-13 09:52:15,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:15,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482520642] [2020-10-13 09:52:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:15,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:15,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 09:52:17,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:52:17,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1976 [2020-10-13 09:52:17,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 09:52:17,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:52:17,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:17,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:17,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:17,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:17,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:17,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:17,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:17,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 09:52:17,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:17,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 09:52:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:17,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:17,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 09:52:17,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:17,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 09:52:17,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:17,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:17,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:52:17,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 09:52:17,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482520642] [2020-10-13 09:52:17,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:17,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:17,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296863335] [2020-10-13 09:52:17,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:17,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:17,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:17,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:17,946 INFO L87 Difference]: Start difference. First operand 11506 states and 14623 transitions. Second operand 5 states. [2020-10-13 09:52:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:27,855 INFO L93 Difference]: Finished difference Result 28757 states and 37845 transitions. [2020-10-13 09:52:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:27,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-13 09:52:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:27,920 INFO L225 Difference]: With dead ends: 28757 [2020-10-13 09:52:27,920 INFO L226 Difference]: Without dead ends: 17257 [2020-10-13 09:52:27,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17257 states. [2020-10-13 09:52:28,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17257 to 17253. [2020-10-13 09:52:28,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17253 states. [2020-10-13 09:52:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17253 states to 17253 states and 22106 transitions. [2020-10-13 09:52:28,236 INFO L78 Accepts]: Start accepts. Automaton has 17253 states and 22106 transitions. Word has length 212 [2020-10-13 09:52:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:28,236 INFO L479 AbstractCegarLoop]: Abstraction has 17253 states and 22106 transitions. [2020-10-13 09:52:28,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 17253 states and 22106 transitions. [2020-10-13 09:52:28,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-13 09:52:28,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:28,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:28,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:52:28,244 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1061610145, now seen corresponding path program 1 times [2020-10-13 09:52:28,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:28,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184775357] [2020-10-13 09:52:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:29,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 09:52:29,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 09:52:29,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-10-13 09:52:29,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:29,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 235 [2020-10-13 09:52:29,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:52:29,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:29,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:29,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:29,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:52:29,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:29,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:29,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 09:52:29,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-13 09:52:29,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:29,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-13 09:52:29,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:29,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184775357] [2020-10-13 09:52:29,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:29,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:52:29,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469730167] [2020-10-13 09:52:29,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:52:29,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:29,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:52:29,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:52:29,768 INFO L87 Difference]: Start difference. First operand 17253 states and 22106 transitions. Second operand 6 states. [2020-10-13 09:52:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:40,634 INFO L93 Difference]: Finished difference Result 41616 states and 55184 transitions. [2020-10-13 09:52:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:40,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 258 [2020-10-13 09:52:40,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:40,722 INFO L225 Difference]: With dead ends: 41616 [2020-10-13 09:52:40,723 INFO L226 Difference]: Without dead ends: 24369 [2020-10-13 09:52:40,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:52:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24369 states. [2020-10-13 09:52:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24369 to 22958. [2020-10-13 09:52:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22958 states. [2020-10-13 09:52:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22958 states to 22958 states and 30661 transitions. [2020-10-13 09:52:41,181 INFO L78 Accepts]: Start accepts. Automaton has 22958 states and 30661 transitions. Word has length 258 [2020-10-13 09:52:41,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:41,182 INFO L479 AbstractCegarLoop]: Abstraction has 22958 states and 30661 transitions. [2020-10-13 09:52:41,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:52:41,182 INFO L276 IsEmpty]: Start isEmpty. Operand 22958 states and 30661 transitions. [2020-10-13 09:52:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-13 09:52:41,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:41,202 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:41,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:52:41,202 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:41,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1988590991, now seen corresponding path program 1 times [2020-10-13 09:52:41,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:41,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715963702] [2020-10-13 09:52:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:42,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-13 09:52:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:52:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:52:46,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:52:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 367 [2020-10-13 09:52:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 09:52:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:46,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:52:46,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:46,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:46,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:46,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 09:52:46,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 09:52:46,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:46,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:46,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 09:52:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:52:46,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 09:52:46,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:52:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:52:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 09:52:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:46,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:46,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-13 09:52:46,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 09:52:46,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 09:52:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-13 09:52:46,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715963702] [2020-10-13 09:52:46,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:52:46,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:52:46,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114509084] [2020-10-13 09:52:46,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:52:46,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:46,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:52:46,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:52:46,924 INFO L87 Difference]: Start difference. First operand 22958 states and 30661 transitions. Second operand 5 states. [2020-10-13 09:52:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:52:56,040 INFO L93 Difference]: Finished difference Result 45926 states and 61431 transitions. [2020-10-13 09:52:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:52:56,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 386 [2020-10-13 09:52:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:52:56,117 INFO L225 Difference]: With dead ends: 45926 [2020-10-13 09:52:56,117 INFO L226 Difference]: Without dead ends: 22965 [2020-10-13 09:52:56,151 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 09:52:56,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22965 states. [2020-10-13 09:52:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22965 to 22958. [2020-10-13 09:52:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22958 states. [2020-10-13 09:52:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22958 states to 22958 states and 30653 transitions. [2020-10-13 09:52:56,548 INFO L78 Accepts]: Start accepts. Automaton has 22958 states and 30653 transitions. Word has length 386 [2020-10-13 09:52:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:52:56,549 INFO L479 AbstractCegarLoop]: Abstraction has 22958 states and 30653 transitions. [2020-10-13 09:52:56,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:52:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 22958 states and 30653 transitions. [2020-10-13 09:52:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-13 09:52:56,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:52:56,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:56,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:52:56,576 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:52:56,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:52:56,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1741975117, now seen corresponding path program 1 times [2020-10-13 09:52:56,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:52:56,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403906069] [2020-10-13 09:52:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:52:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:56,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:57,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:57,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 436 [2020-10-13 09:52:57,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-13 09:52:57,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 09:52:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:52:57,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 396 [2020-10-13 09:52:57,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:52:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:57,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:57,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:52:57,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:57,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:52:57,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:52:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:52:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:52:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:52:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:52:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:57,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:58,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:58,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:52:58,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-13 09:52:58,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:58,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:52:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:58,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 394 [2020-10-13 09:52:58,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:58,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:52:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:52:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:52:58,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:52:58,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:52:58,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:52:58,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-13 09:52:58,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:52:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 09:52:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:52:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:52:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:52:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:52:59,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403906069] [2020-10-13 09:52:59,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:52:59,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 09:52:59,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879410023] [2020-10-13 09:52:59,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:52:59,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:52:59,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:52:59,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:52:59,175 INFO L87 Difference]: Start difference. First operand 22958 states and 30653 transitions. Second operand 8 states. [2020-10-13 09:53:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:11,475 INFO L93 Difference]: Finished difference Result 47603 states and 63992 transitions. [2020-10-13 09:53:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:53:11,477 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 424 [2020-10-13 09:53:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:11,535 INFO L225 Difference]: With dead ends: 47603 [2020-10-13 09:53:11,535 INFO L226 Difference]: Without dead ends: 22365 [2020-10-13 09:53:11,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 09:53:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22365 states. [2020-10-13 09:53:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22365 to 20922. [2020-10-13 09:53:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20922 states. [2020-10-13 09:53:13,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20922 states to 20922 states and 23688 transitions. [2020-10-13 09:53:13,088 INFO L78 Accepts]: Start accepts. Automaton has 20922 states and 23688 transitions. Word has length 424 [2020-10-13 09:53:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:13,089 INFO L479 AbstractCegarLoop]: Abstraction has 20922 states and 23688 transitions. [2020-10-13 09:53:13,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:53:13,089 INFO L276 IsEmpty]: Start isEmpty. Operand 20922 states and 23688 transitions. [2020-10-13 09:53:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-13 09:53:13,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:13,109 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:13,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:53:13,109 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:13,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:13,110 INFO L82 PathProgramCache]: Analyzing trace with hash 29350350, now seen corresponding path program 1 times [2020-10-13 09:53:13,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:13,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734368377] [2020-10-13 09:53:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:13,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-13 09:53:18,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:53:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 09:53:18,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 524 [2020-10-13 09:53:18,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:53:18,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:53:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:18,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:18,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:18,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:53:18,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:18,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:18,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:53:18,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 09:53:18,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:53:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:18,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:53:18,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:18,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 09:53:18,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:18,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:18,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:18,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-13 09:53:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:18,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 09:53:18,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 09:53:18,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:18,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:18,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-13 09:53:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:18,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:18,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 09:53:18,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:18,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-13 09:53:18,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:18,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-13 09:53:18,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2020-10-13 09:53:18,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734368377] [2020-10-13 09:53:18,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:18,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:18,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847564935] [2020-10-13 09:53:18,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:18,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:18,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:18,916 INFO L87 Difference]: Start difference. First operand 20922 states and 23688 transitions. Second operand 5 states. [2020-10-13 09:53:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:29,453 INFO L93 Difference]: Finished difference Result 56714 states and 65009 transitions. [2020-10-13 09:53:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:29,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 541 [2020-10-13 09:53:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:29,532 INFO L225 Difference]: With dead ends: 56714 [2020-10-13 09:53:29,533 INFO L226 Difference]: Without dead ends: 35798 [2020-10-13 09:53:29,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 09:53:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35798 states. [2020-10-13 09:53:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35798 to 35090. [2020-10-13 09:53:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35090 states. [2020-10-13 09:53:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35090 states to 35090 states and 39207 transitions. [2020-10-13 09:53:30,075 INFO L78 Accepts]: Start accepts. Automaton has 35090 states and 39207 transitions. Word has length 541 [2020-10-13 09:53:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:30,076 INFO L479 AbstractCegarLoop]: Abstraction has 35090 states and 39207 transitions. [2020-10-13 09:53:30,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 35090 states and 39207 transitions. [2020-10-13 09:53:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2020-10-13 09:53:30,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:30,116 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:30,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:53:30,116 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:30,117 INFO L82 PathProgramCache]: Analyzing trace with hash -878182731, now seen corresponding path program 1 times [2020-10-13 09:53:30,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:30,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353187568] [2020-10-13 09:53:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:35,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:35,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-13 09:53:35,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:53:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 09:53:35,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 617 [2020-10-13 09:53:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 09:53:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:35,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:35,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:35,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:35,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:53:35,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:35,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:35,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:35,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:35,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:53:35,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 09:53:35,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:53:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:35,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:35,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:35,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-13 09:53:35,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 09:53:35,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 478 [2020-10-13 09:53:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 09:53:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-13 09:53:36,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353187568] [2020-10-13 09:53:36,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:36,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:36,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354250283] [2020-10-13 09:53:36,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:36,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:36,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:36,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:36,529 INFO L87 Difference]: Start difference. First operand 35090 states and 39207 transitions. Second operand 5 states. [2020-10-13 09:53:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:41,811 INFO L93 Difference]: Finished difference Result 70209 states and 78485 transitions. [2020-10-13 09:53:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:41,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 639 [2020-10-13 09:53:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:41,881 INFO L225 Difference]: With dead ends: 70209 [2020-10-13 09:53:41,881 INFO L226 Difference]: Without dead ends: 35097 [2020-10-13 09:53:41,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 09:53:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35097 states. [2020-10-13 09:53:42,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35097 to 35093. [2020-10-13 09:53:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35093 states. [2020-10-13 09:53:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35093 states to 35093 states and 39194 transitions. [2020-10-13 09:53:42,408 INFO L78 Accepts]: Start accepts. Automaton has 35093 states and 39194 transitions. Word has length 639 [2020-10-13 09:53:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:42,409 INFO L479 AbstractCegarLoop]: Abstraction has 35093 states and 39194 transitions. [2020-10-13 09:53:42,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 35093 states and 39194 transitions. [2020-10-13 09:53:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-13 09:53:42,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:42,443 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:42,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:53:42,443 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:42,444 INFO L82 PathProgramCache]: Analyzing trace with hash -349753822, now seen corresponding path program 1 times [2020-10-13 09:53:42,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:42,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342505988] [2020-10-13 09:53:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:42,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:45,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:47,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 668 [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 632 [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 09:53:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:47,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:53:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:47,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:53:47,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:53:47,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:53:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:47,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:53:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:47,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:47,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:47,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 09:53:47,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 09:53:47,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:53:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:53:47,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-13 09:53:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:48,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 410 [2020-10-13 09:53:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:48,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:53:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:48,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:53:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 09:53:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:53:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 09:53:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:53:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:53:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:53:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 09:53:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:53:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-13 09:53:48,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342505988] [2020-10-13 09:53:48,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:53:48,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:53:48,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176881339] [2020-10-13 09:53:48,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:53:48,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:53:48,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:53:48,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:53:48,656 INFO L87 Difference]: Start difference. First operand 35093 states and 39194 transitions. Second operand 5 states. [2020-10-13 09:53:55,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:53:55,885 INFO L93 Difference]: Finished difference Result 70237 states and 78480 transitions. [2020-10-13 09:53:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:53:55,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 652 [2020-10-13 09:53:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:53:55,961 INFO L225 Difference]: With dead ends: 70237 [2020-10-13 09:53:55,961 INFO L226 Difference]: Without dead ends: 35092 [2020-10-13 09:53:56,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 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 09:53:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35092 states. [2020-10-13 09:53:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35092 to 35088. [2020-10-13 09:53:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35088 states. [2020-10-13 09:53:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35088 states to 35088 states and 39163 transitions. [2020-10-13 09:53:56,454 INFO L78 Accepts]: Start accepts. Automaton has 35088 states and 39163 transitions. Word has length 652 [2020-10-13 09:53:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:53:56,455 INFO L479 AbstractCegarLoop]: Abstraction has 35088 states and 39163 transitions. [2020-10-13 09:53:56,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:53:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 35088 states and 39163 transitions. [2020-10-13 09:53:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2020-10-13 09:53:56,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:53:56,483 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:53:56,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:53:56,483 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:53:56,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:53:56,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1871653397, now seen corresponding path program 1 times [2020-10-13 09:53:56,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:53:56,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978792447] [2020-10-13 09:53:56,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:53:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:53:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:53:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:01,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 668 [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-13 09:54:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:01,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:01,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:01,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:54:01,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:01,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:01,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:54:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:54:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 09:54:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:01,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:54:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:02,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:02,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:54:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 09:54:02,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 09:54:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 09:54:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:02,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:02,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:54:02,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 09:54:02,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 391 [2020-10-13 09:54:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:02,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:02,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:54:02,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:02,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:54:02,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:02,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 185 proven. 105 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-13 09:54:02,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978792447] [2020-10-13 09:54:02,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:02,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:54:02,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707858681] [2020-10-13 09:54:02,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:54:02,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:02,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:54:02,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:54:02,523 INFO L87 Difference]: Start difference. First operand 35088 states and 39163 transitions. Second operand 7 states. [2020-10-13 09:54:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:54:13,226 INFO L93 Difference]: Finished difference Result 86368 states and 100924 transitions. [2020-10-13 09:54:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:54:13,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 652 [2020-10-13 09:54:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:54:13,348 INFO L225 Difference]: With dead ends: 86368 [2020-10-13 09:54:13,348 INFO L226 Difference]: Without dead ends: 51286 [2020-10-13 09:54:13,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:54:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51286 states. [2020-10-13 09:54:14,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51286 to 50984. [2020-10-13 09:54:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50984 states. [2020-10-13 09:54:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50984 states to 50984 states and 57220 transitions. [2020-10-13 09:54:14,184 INFO L78 Accepts]: Start accepts. Automaton has 50984 states and 57220 transitions. Word has length 652 [2020-10-13 09:54:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:54:14,185 INFO L479 AbstractCegarLoop]: Abstraction has 50984 states and 57220 transitions. [2020-10-13 09:54:14,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:54:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 50984 states and 57220 transitions. [2020-10-13 09:54:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2020-10-13 09:54:14,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:14,226 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:14,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:54:14,226 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash 660875926, now seen corresponding path program 1 times [2020-10-13 09:54:14,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:14,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288568026] [2020-10-13 09:54:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:14,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:15,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:16,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:19,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 692 [2020-10-13 09:54:19,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:54:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:54:19,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 656 [2020-10-13 09:54:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 09:54:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:19,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:19,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:19,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:19,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:19,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 09:54:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:54:19,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:19,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 09:54:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:19,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:19,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 09:54:19,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 09:54:19,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 09:54:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:19,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 09:54:19,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:54:19,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:19,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-13 09:54:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-13 09:54:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:19,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:19,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 09:54:19,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 09:54:19,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:54:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2020-10-13 09:54:20,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288568026] [2020-10-13 09:54:20,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:20,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:54:20,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288201843] [2020-10-13 09:54:20,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:54:20,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:20,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:54:20,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:54:20,328 INFO L87 Difference]: Start difference. First operand 50984 states and 57220 transitions. Second operand 5 states. [2020-10-13 09:54:25,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:54:25,313 INFO L93 Difference]: Finished difference Result 101980 states and 114491 transitions. [2020-10-13 09:54:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:54:25,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 674 [2020-10-13 09:54:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:54:25,391 INFO L225 Difference]: With dead ends: 101980 [2020-10-13 09:54:25,392 INFO L226 Difference]: Without dead ends: 50983 [2020-10-13 09:54:25,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 2 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 09:54:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50983 states. [2020-10-13 09:54:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50983 to 50979. [2020-10-13 09:54:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50979 states. [2020-10-13 09:54:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50979 states to 50979 states and 57187 transitions. [2020-10-13 09:54:25,950 INFO L78 Accepts]: Start accepts. Automaton has 50979 states and 57187 transitions. Word has length 674 [2020-10-13 09:54:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:54:25,951 INFO L479 AbstractCegarLoop]: Abstraction has 50979 states and 57187 transitions. [2020-10-13 09:54:25,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:54:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 50979 states and 57187 transitions. [2020-10-13 09:54:25,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2020-10-13 09:54:25,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:25,976 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:25,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 09:54:25,977 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:25,977 INFO L82 PathProgramCache]: Analyzing trace with hash -645373024, now seen corresponding path program 1 times [2020-10-13 09:54:25,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:25,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539072519] [2020-10-13 09:54:25,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:31,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:31,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-13 09:54:31,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:54:31,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 09:54:31,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:54:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:54:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-13 09:54:31,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:54:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:31,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:31,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:54:31,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:31,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 09:54:31,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:54:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:31,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:54:31,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:54:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:31,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:31,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 09:54:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 09:54:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:54:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:54:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 09:54:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 09:54:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:31,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:31,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 09:54:31,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 09:54:31,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 09:54:31,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:31,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:31,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-13 09:54:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:31,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:31,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 391 [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:31,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:54:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:31,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:54:31,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 09:54:31,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:54:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 09:54:31,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:54:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:54:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:54:31,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:54:31,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:54:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 78 proven. 234 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-13 09:54:33,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539072519] [2020-10-13 09:54:33,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:54:33,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:54:33,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183527343] [2020-10-13 09:54:33,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:54:33,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:54:33,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:54:33,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:54:33,181 INFO L87 Difference]: Start difference. First operand 50979 states and 57187 transitions. Second operand 7 states. [2020-10-13 09:54:43,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:54:43,270 INFO L93 Difference]: Finished difference Result 102786 states and 115464 transitions. [2020-10-13 09:54:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:54:43,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 673 [2020-10-13 09:54:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:54:43,345 INFO L225 Difference]: With dead ends: 102786 [2020-10-13 09:54:43,345 INFO L226 Difference]: Without dead ends: 51813 [2020-10-13 09:54:43,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 09:54:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51813 states. [2020-10-13 09:54:43,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51813 to 51791. [2020-10-13 09:54:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51791 states. [2020-10-13 09:54:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51791 states to 51791 states and 58205 transitions. [2020-10-13 09:54:43,866 INFO L78 Accepts]: Start accepts. Automaton has 51791 states and 58205 transitions. Word has length 673 [2020-10-13 09:54:43,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:54:43,867 INFO L479 AbstractCegarLoop]: Abstraction has 51791 states and 58205 transitions. [2020-10-13 09:54:43,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:54:43,867 INFO L276 IsEmpty]: Start isEmpty. Operand 51791 states and 58205 transitions. [2020-10-13 09:54:43,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2020-10-13 09:54:43,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:54:43,900 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:54:43,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 09:54:43,900 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:54:43,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:54:43,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1400742466, now seen corresponding path program 1 times [2020-10-13 09:54:43,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:54:43,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574268836] [2020-10-13 09:54:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:54:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:54:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:54:44,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking...