/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 09:01:07,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 09:01:07,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 09:01:07,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 09:01:07,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 09:01:07,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 09:01:07,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 09:01:07,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 09:01:07,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 09:01:07,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 09:01:07,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 09:01:07,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 09:01:07,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 09:01:07,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 09:01:07,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 09:01:07,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 09:01:07,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 09:01:07,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 09:01:07,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 09:01:07,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 09:01:07,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 09:01:07,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 09:01:07,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 09:01:07,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 09:01:07,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 09:01:07,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 09:01:07,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 09:01:07,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 09:01:07,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 09:01:07,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 09:01:07,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 09:01:07,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 09:01:07,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 09:01:07,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 09:01:07,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 09:01:07,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 09:01:07,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 09:01:07,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 09:01:07,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 09:01:07,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 09:01:07,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 09:01:07,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 09:01:07,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 09:01:07,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 09:01:07,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 09:01:07,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 09:01:07,478 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 09:01:07,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 09:01:07,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 09:01:07,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 09:01:07,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 09:01:07,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 09:01:07,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 09:01:07,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 09:01:07,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 09:01:07,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 09:01:07,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 09:01:07,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 09:01:07,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 09:01:07,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 09:01:07,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 09:01:07,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 09:01:07,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 09:01:07,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:01:07,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 09:01:07,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 09:01:07,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 09:01:07,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 09:01:07,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 09:01:07,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 09:01:07,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 09:01:07,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 09:01:07,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 09:01:07,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 09:01:07,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 09:01:07,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 09:01:07,821 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 09:01:07,821 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18.c [2020-10-13 09:01:07,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbe5f9ae2/b6f4446d1f7540e8ba0991f421cd4921/FLAG8c315bc73 [2020-10-13 09:01:08,626 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 09:01:08,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label18.c [2020-10-13 09:01:08,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbe5f9ae2/b6f4446d1f7540e8ba0991f421cd4921/FLAG8c315bc73 [2020-10-13 09:01:08,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbe5f9ae2/b6f4446d1f7540e8ba0991f421cd4921 [2020-10-13 09:01:08,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 09:01:08,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 09:01:08,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 09:01:08,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 09:01:08,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 09:01:08,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:08" (1/1) ... [2020-10-13 09:01:08,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fa4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:08, skipping insertion in model container [2020-10-13 09:01:08,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:01:08" (1/1) ... [2020-10-13 09:01:08,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 09:01:08,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 09:01:09,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:01:09,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 09:01:10,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 09:01:10,319 INFO L208 MainTranslator]: Completed translation [2020-10-13 09:01:10,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10 WrapperNode [2020-10-13 09:01:10,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 09:01:10,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 09:01:10,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 09:01:10,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 09:01:10,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... [2020-10-13 09:01:10,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... [2020-10-13 09:01:10,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... [2020-10-13 09:01:10,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... [2020-10-13 09:01:10,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... [2020-10-13 09:01:10,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... [2020-10-13 09:01:10,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... [2020-10-13 09:01:10,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 09:01:10,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 09:01:10,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 09:01:10,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 09:01:10,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 09:01:10,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 09:01:10,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 09:01:10,622 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 09:01:10,622 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 09:01:10,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 09:01:10,622 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 09:01:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 09:01:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 09:01:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 09:01:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 09:01:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 09:01:10,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 09:01:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 09:01:16,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 09:01:16,253 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 09:01:16,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:16 BoogieIcfgContainer [2020-10-13 09:01:16,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 09:01:16,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 09:01:16,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 09:01:16,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 09:01:16,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:01:08" (1/3) ... [2020-10-13 09:01:16,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b5b085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:16, skipping insertion in model container [2020-10-13 09:01:16,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:01:10" (2/3) ... [2020-10-13 09:01:16,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49b5b085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:01:16, skipping insertion in model container [2020-10-13 09:01:16,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:01:16" (3/3) ... [2020-10-13 09:01:16,271 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label18.c [2020-10-13 09:01:16,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 09:01:16,291 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 09:01:16,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 09:01:16,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 09:01:16,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 09:01:16,339 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 09:01:16,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 09:01:16,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 09:01:16,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 09:01:16,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 09:01:16,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 09:01:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-13 09:01:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 09:01:16,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:16,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:01:16,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -499099328, now seen corresponding path program 1 times [2020-10-13 09:01:16,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:16,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290725176] [2020-10-13 09:01:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:16,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:16,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 09:01:16,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:16,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-13 09:01:16,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:01:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:01:16,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 09:01:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:01:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:16,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:16,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:16,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:16,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 09:01:16,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:16,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:01:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:16,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290725176] [2020-10-13 09:01:16,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:01:16,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 09:01:16,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743182601] [2020-10-13 09:01:16,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 09:01:16,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 09:01:16,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 09:01:16,924 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-13 09:01:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:22,882 INFO L93 Difference]: Finished difference Result 1224 states and 2200 transitions. [2020-10-13 09:01:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:01:22,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 09:01:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:22,924 INFO L225 Difference]: With dead ends: 1224 [2020-10-13 09:01:22,925 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 09:01:22,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:01:22,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 09:01:23,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 694. [2020-10-13 09:01:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-10-13 09:01:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1080 transitions. [2020-10-13 09:01:23,045 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1080 transitions. Word has length 14 [2020-10-13 09:01:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:23,045 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 1080 transitions. [2020-10-13 09:01:23,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 09:01:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1080 transitions. [2020-10-13 09:01:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 09:01:23,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:23,050 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:01:23,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 09:01:23,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:23,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2093736095, now seen corresponding path program 1 times [2020-10-13 09:01:23,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:23,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597932130] [2020-10-13 09:01:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:24,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:24,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 09:01:24,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:01:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-13 09:01:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:01:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:01:24,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:24,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:24,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:24,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:24,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:01:24,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:24,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:24,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:24,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:24,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 09:01:24,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 09:01:24,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 09:01:24,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:24,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597932130] [2020-10-13 09:01:24,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:24,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 09:01:24,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111228979] [2020-10-13 09:01:24,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 09:01:24,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:24,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 09:01:24,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:01:24,387 INFO L87 Difference]: Start difference. First operand 694 states and 1080 transitions. Second operand 6 states. [2020-10-13 09:01:35,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:35,264 INFO L93 Difference]: Finished difference Result 2017 states and 3283 transitions. [2020-10-13 09:01:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 09:01:35,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-10-13 09:01:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:35,274 INFO L225 Difference]: With dead ends: 2017 [2020-10-13 09:01:35,275 INFO L226 Difference]: Without dead ends: 1329 [2020-10-13 09:01:35,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:01:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-13 09:01:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1327. [2020-10-13 09:01:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-10-13 09:01:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1880 transitions. [2020-10-13 09:01:35,328 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1880 transitions. Word has length 84 [2020-10-13 09:01:35,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:35,329 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1880 transitions. [2020-10-13 09:01:35,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 09:01:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1880 transitions. [2020-10-13 09:01:35,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 09:01:35,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:35,334 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 09:01:35,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 09:01:35,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:35,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:35,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1869188831, now seen corresponding path program 1 times [2020-10-13 09:01:35,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:35,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500891565] [2020-10-13 09:01:35,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:35,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:35,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 09:01:35,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-13 09:01:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 09:01:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 09:01:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-13 09:01:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:35,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:35,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:35,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:35,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:35,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 09:01:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:01:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:35,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:35,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:35,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:01:35,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-13 09:01:35,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:01:35,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:01:35,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 09:01:36,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500891565] [2020-10-13 09:01:36,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 09:01:36,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 09:01:36,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48449802] [2020-10-13 09:01:36,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:01:36,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:36,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:01:36,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:01:36,048 INFO L87 Difference]: Start difference. First operand 1327 states and 1880 transitions. Second operand 7 states. [2020-10-13 09:01:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:44,291 INFO L93 Difference]: Finished difference Result 3330 states and 4954 transitions. [2020-10-13 09:01:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:01:44,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 09:01:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:44,305 INFO L225 Difference]: With dead ends: 3330 [2020-10-13 09:01:44,306 INFO L226 Difference]: Without dead ends: 2316 [2020-10-13 09:01:44,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:01:44,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-10-13 09:01:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1981. [2020-10-13 09:01:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2020-10-13 09:01:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2627 transitions. [2020-10-13 09:01:44,378 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2627 transitions. Word has length 97 [2020-10-13 09:01:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:44,378 INFO L479 AbstractCegarLoop]: Abstraction has 1981 states and 2627 transitions. [2020-10-13 09:01:44,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:01:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2627 transitions. [2020-10-13 09:01:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-13 09:01:44,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:44,389 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 09:01:44,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 09:01:44,389 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1914601154, now seen corresponding path program 1 times [2020-10-13 09:01:44,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:44,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879499380] [2020-10-13 09:01:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:44,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:49,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:49,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-13 09:01:49,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:01:49,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-13 09:01:49,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-13 09:01:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 09:01:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:01:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:49,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:49,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:49,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:01:49,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:49,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:01:49,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:49,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:01:49,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:01:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:49,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:49,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:01:49,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:49,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:01:49,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:01:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:49,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:01:49,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:01:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:49,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:49,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:01:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 09:01:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:01:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:01:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 09:01:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-13 09:01:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:50,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:01:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:01:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:01:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 09:01:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:01:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:01:50,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:01:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 09:01:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:01:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-13 09:01:50,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879499380] [2020-10-13 09:01:50,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:01:50,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:01:50,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870127269] [2020-10-13 09:01:50,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:01:50,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:01:50,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:01:50,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:01:50,299 INFO L87 Difference]: Start difference. First operand 1981 states and 2627 transitions. Second operand 7 states. [2020-10-13 09:01:59,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:01:59,255 INFO L93 Difference]: Finished difference Result 6517 states and 8675 transitions. [2020-10-13 09:01:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:01:59,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 373 [2020-10-13 09:01:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:01:59,285 INFO L225 Difference]: With dead ends: 6517 [2020-10-13 09:01:59,285 INFO L226 Difference]: Without dead ends: 3899 [2020-10-13 09:01:59,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:01:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2020-10-13 09:01:59,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3876. [2020-10-13 09:01:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3876 states. [2020-10-13 09:01:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 4573 transitions. [2020-10-13 09:01:59,438 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 4573 transitions. Word has length 373 [2020-10-13 09:01:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:01:59,441 INFO L479 AbstractCegarLoop]: Abstraction has 3876 states and 4573 transitions. [2020-10-13 09:01:59,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:01:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 4573 transitions. [2020-10-13 09:01:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-13 09:01:59,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:01:59,450 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-13 09:01:59,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 09:01:59,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:01:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:01:59,452 INFO L82 PathProgramCache]: Analyzing trace with hash 567340814, now seen corresponding path program 1 times [2020-10-13 09:01:59,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:01:59,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266897824] [2020-10-13 09:01:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:01:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:01:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:59,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:01:59,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:00,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:04,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-13 09:02:04,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:02:04,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 09:02:04,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-13 09:02:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:04,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:04,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:04,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 09:02:04,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:04,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:04,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:04,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 09:02:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:04,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:04,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:02:04,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:04,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 09:02:04,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:02:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:05,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:05,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 09:02:05,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 09:02:05,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:05,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 09:02:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:02:05,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 09:02:05,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-13 09:02:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:05,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:05,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:05,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 09:02:05,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 09:02:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-13 09:02:05,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:05,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-13 09:02:05,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266897824] [2020-10-13 09:02:05,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:05,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:05,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986221485] [2020-10-13 09:02:05,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:05,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:05,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:05,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:05,373 INFO L87 Difference]: Start difference. First operand 3876 states and 4573 transitions. Second operand 5 states. [2020-10-13 09:02:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:14,948 INFO L93 Difference]: Finished difference Result 11493 states and 13815 transitions. [2020-10-13 09:02:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:02:14,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 379 [2020-10-13 09:02:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:14,992 INFO L225 Difference]: With dead ends: 11493 [2020-10-13 09:02:14,993 INFO L226 Difference]: Without dead ends: 7313 [2020-10-13 09:02:15,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:02:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7313 states. [2020-10-13 09:02:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7313 to 6676. [2020-10-13 09:02:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6676 states. [2020-10-13 09:02:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6676 states to 6676 states and 8009 transitions. [2020-10-13 09:02:15,217 INFO L78 Accepts]: Start accepts. Automaton has 6676 states and 8009 transitions. Word has length 379 [2020-10-13 09:02:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:15,218 INFO L479 AbstractCegarLoop]: Abstraction has 6676 states and 8009 transitions. [2020-10-13 09:02:15,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:02:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6676 states and 8009 transitions. [2020-10-13 09:02:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-13 09:02:15,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:15,230 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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] [2020-10-13 09:02:15,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 09:02:15,230 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:15,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1021112922, now seen corresponding path program 1 times [2020-10-13 09:02:15,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:15,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240534932] [2020-10-13 09:02:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:15,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:15,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:20,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 421 [2020-10-13 09:02:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:02:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-13 09:02:20,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:02:20,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 09:02:20,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:20,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:20,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:20,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:02:20,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:20,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:20,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:20,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:20,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:02:20,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 09:02:20,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:20,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:02:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:20,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:20,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:02:20,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:20,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 09:02:20,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:20,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:02:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:20,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:02:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:21,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:21,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:02:21,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:21,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-13 09:02:21,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:21,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:02:21,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 09:02:21,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240534932] [2020-10-13 09:02:21,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:21,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:02:21,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635217058] [2020-10-13 09:02:21,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:21,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:21,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:21,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:21,491 INFO L87 Difference]: Start difference. First operand 6676 states and 8009 transitions. Second operand 7 states. [2020-10-13 09:02:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:31,387 INFO L93 Difference]: Finished difference Result 16006 states and 20183 transitions. [2020-10-13 09:02:31,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:02:31,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 407 [2020-10-13 09:02:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:31,450 INFO L225 Difference]: With dead ends: 16006 [2020-10-13 09:02:31,450 INFO L226 Difference]: Without dead ends: 9340 [2020-10-13 09:02:31,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:02:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2020-10-13 09:02:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 8928. [2020-10-13 09:02:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8928 states. [2020-10-13 09:02:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8928 states to 8928 states and 10659 transitions. [2020-10-13 09:02:31,737 INFO L78 Accepts]: Start accepts. Automaton has 8928 states and 10659 transitions. Word has length 407 [2020-10-13 09:02:31,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:31,738 INFO L479 AbstractCegarLoop]: Abstraction has 8928 states and 10659 transitions. [2020-10-13 09:02:31,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 8928 states and 10659 transitions. [2020-10-13 09:02:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-13 09:02:31,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:31,754 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:31,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 09:02:31,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1358378041, now seen corresponding path program 1 times [2020-10-13 09:02:31,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:31,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172460055] [2020-10-13 09:02:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:31,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:33,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:36,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:36,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 506 [2020-10-13 09:02:36,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:02:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 09:02:36,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 380 [2020-10-13 09:02:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 09:02:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:37,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:37,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:37,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:37,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:02:37,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:37,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:37,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:37,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:02:37,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:37,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:02:37,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:37,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:37,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:37,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:37,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:02:37,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:02:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:37,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:37,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:02:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:37,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-13 09:02:37,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:37,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:02:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-13 09:02:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:37,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:37,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 09:02:37,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-13 09:02:37,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:02:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 09:02:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-13 09:02:38,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172460055] [2020-10-13 09:02:38,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:38,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:02:38,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600914078] [2020-10-13 09:02:38,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:02:38,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:38,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:02:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:02:38,105 INFO L87 Difference]: Start difference. First operand 8928 states and 10659 transitions. Second operand 7 states. [2020-10-13 09:02:48,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:02:48,872 INFO L93 Difference]: Finished difference Result 21851 states and 27772 transitions. [2020-10-13 09:02:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:02:48,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2020-10-13 09:02:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:02:48,958 INFO L225 Difference]: With dead ends: 21851 [2020-10-13 09:02:48,958 INFO L226 Difference]: Without dead ends: 12933 [2020-10-13 09:02:48,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:02:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12933 states. [2020-10-13 09:02:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12933 to 12431. [2020-10-13 09:02:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12431 states. [2020-10-13 09:02:49,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12431 states to 12431 states and 14757 transitions. [2020-10-13 09:02:49,411 INFO L78 Accepts]: Start accepts. Automaton has 12431 states and 14757 transitions. Word has length 492 [2020-10-13 09:02:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:02:49,413 INFO L479 AbstractCegarLoop]: Abstraction has 12431 states and 14757 transitions. [2020-10-13 09:02:49,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:02:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 12431 states and 14757 transitions. [2020-10-13 09:02:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-13 09:02:49,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:02:49,440 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:02:49,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 09:02:49,441 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:02:49,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:02:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash -348739294, now seen corresponding path program 1 times [2020-10-13 09:02:49,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:02:49,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113954930] [2020-10-13 09:02:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:02:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:49,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:50,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:54,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 507 [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 09:02:54,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:54,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:02:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:54,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:54,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:54,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:02:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:02:54,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:54,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:54,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:54,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:02:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:54,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:54,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:02:54,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:54,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 09:02:54,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:54,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:02:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:54,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:54,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:02:54,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 09:02:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:02:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:02:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:02:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:02:54,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:02:55,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:02:55,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-13 09:02:55,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:02:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 09:02:55,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:02:55,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:02:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:02:55,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 09:02:55,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:02:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-13 09:02:55,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113954930] [2020-10-13 09:02:55,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:02:55,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:02:55,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960547128] [2020-10-13 09:02:55,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:02:55,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:02:55,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:02:55,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:02:55,215 INFO L87 Difference]: Start difference. First operand 12431 states and 14757 transitions. Second operand 5 states. [2020-10-13 09:03:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:04,362 INFO L93 Difference]: Finished difference Result 28249 states and 34464 transitions. [2020-10-13 09:03:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:04,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2020-10-13 09:03:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:04,436 INFO L225 Difference]: With dead ends: 28249 [2020-10-13 09:03:04,436 INFO L226 Difference]: Without dead ends: 17975 [2020-10-13 09:03:04,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17975 states. [2020-10-13 09:03:04,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17975 to 15509. [2020-10-13 09:03:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15509 states. [2020-10-13 09:03:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15509 states to 15509 states and 18338 transitions. [2020-10-13 09:03:04,781 INFO L78 Accepts]: Start accepts. Automaton has 15509 states and 18338 transitions. Word has length 493 [2020-10-13 09:03:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:04,782 INFO L479 AbstractCegarLoop]: Abstraction has 15509 states and 18338 transitions. [2020-10-13 09:03:04,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:04,783 INFO L276 IsEmpty]: Start isEmpty. Operand 15509 states and 18338 transitions. [2020-10-13 09:03:04,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-13 09:03:04,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:04,802 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:04,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 09:03:04,803 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:04,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1073713639, now seen corresponding path program 1 times [2020-10-13 09:03:04,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:04,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818973360] [2020-10-13 09:03:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:05,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:09,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:09,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-13 09:03:09,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:03:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 09:03:09,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-13 09:03:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:03:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:09,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:09,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:09,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:03:09,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:10,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:10,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:10,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:03:10,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 09:03:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:03:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:10,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:03:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 09:03:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 09:03:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:03:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:10,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:10,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:03:10,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:03:10,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 09:03:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-13 09:03:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:10,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:10,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:10,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:03:10,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:10,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 09:03:10,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:03:10,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:10,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 213 proven. 81 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-13 09:03:10,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818973360] [2020-10-13 09:03:10,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:10,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:03:10,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485834554] [2020-10-13 09:03:10,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:03:10,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:10,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:03:10,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:03:10,477 INFO L87 Difference]: Start difference. First operand 15509 states and 18338 transitions. Second operand 7 states. [2020-10-13 09:03:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:25,975 INFO L93 Difference]: Finished difference Result 33209 states and 40294 transitions. [2020-10-13 09:03:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:03:25,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 498 [2020-10-13 09:03:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:26,048 INFO L225 Difference]: With dead ends: 33209 [2020-10-13 09:03:26,048 INFO L226 Difference]: Without dead ends: 19857 [2020-10-13 09:03:26,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:03:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19857 states. [2020-10-13 09:03:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19857 to 15230. [2020-10-13 09:03:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15230 states. [2020-10-13 09:03:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15230 states to 15230 states and 18843 transitions. [2020-10-13 09:03:26,416 INFO L78 Accepts]: Start accepts. Automaton has 15230 states and 18843 transitions. Word has length 498 [2020-10-13 09:03:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:26,417 INFO L479 AbstractCegarLoop]: Abstraction has 15230 states and 18843 transitions. [2020-10-13 09:03:26,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:03:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 15230 states and 18843 transitions. [2020-10-13 09:03:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-13 09:03:26,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:26,432 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:26,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 09:03:26,432 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash -945773770, now seen corresponding path program 1 times [2020-10-13 09:03:26,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:26,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384738545] [2020-10-13 09:03:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:26,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:31,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-13 09:03:31,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:31,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 09:03:31,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-13 09:03:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:03:31,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:31,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:31,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:03:31,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:31,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:03:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 09:03:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:03:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:31,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:03:31,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:31,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:03:31,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:31,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:31,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:31,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:03:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:31,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:31,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:03:31,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:31,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 09:03:31,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:31,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:31,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 09:03:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:31,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-13 09:03:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:32,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:32,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 09:03:32,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 09:03:32,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:03:32,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 09:03:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-13 09:03:32,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384738545] [2020-10-13 09:03:32,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:32,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:03:32,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599588182] [2020-10-13 09:03:32,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:03:32,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:32,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:03:32,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:03:32,215 INFO L87 Difference]: Start difference. First operand 15230 states and 18843 transitions. Second operand 7 states. [2020-10-13 09:03:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:38,581 INFO L93 Difference]: Finished difference Result 32351 states and 39953 transitions. [2020-10-13 09:03:38,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 09:03:38,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 499 [2020-10-13 09:03:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:38,633 INFO L225 Difference]: With dead ends: 32351 [2020-10-13 09:03:38,633 INFO L226 Difference]: Without dead ends: 16185 [2020-10-13 09:03:38,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:03:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16185 states. [2020-10-13 09:03:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16185 to 15524. [2020-10-13 09:03:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15524 states. [2020-10-13 09:03:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15524 states to 15524 states and 18666 transitions. [2020-10-13 09:03:38,928 INFO L78 Accepts]: Start accepts. Automaton has 15524 states and 18666 transitions. Word has length 499 [2020-10-13 09:03:38,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:38,929 INFO L479 AbstractCegarLoop]: Abstraction has 15524 states and 18666 transitions. [2020-10-13 09:03:38,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:03:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 15524 states and 18666 transitions. [2020-10-13 09:03:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-13 09:03:38,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:38,947 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 09:03:38,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 09:03:38,948 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1097637558, now seen corresponding path program 1 times [2020-10-13 09:03:38,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:38,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365544945] [2020-10-13 09:03:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:39,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:40,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:43,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:43,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 544 [2020-10-13 09:03:43,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:03:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4718 [2020-10-13 09:03:43,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:03:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 528 [2020-10-13 09:03:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 09:03:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:43,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:43,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:43,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:43,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:43,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:43,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:03:43,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:43,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:43,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:43,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:43,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:03:43,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 09:03:43,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:03:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:44,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:44,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:03:44,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:44,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 09:03:44,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:44,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:03:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:44,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:44,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 09:03:44,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 09:03:44,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 09:03:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2020-10-13 09:03:44,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365544945] [2020-10-13 09:03:44,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:44,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:44,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351552527] [2020-10-13 09:03:44,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:44,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:44,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:44,450 INFO L87 Difference]: Start difference. First operand 15524 states and 18666 transitions. Second operand 5 states. [2020-10-13 09:03:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:03:49,815 INFO L93 Difference]: Finished difference Result 33513 states and 40837 transitions. [2020-10-13 09:03:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:03:49,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 530 [2020-10-13 09:03:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:03:49,889 INFO L225 Difference]: With dead ends: 33513 [2020-10-13 09:03:49,890 INFO L226 Difference]: Without dead ends: 17995 [2020-10-13 09:03:49,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:03:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17995 states. [2020-10-13 09:03:50,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17995 to 17373. [2020-10-13 09:03:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17373 states. [2020-10-13 09:03:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17373 states to 17373 states and 21022 transitions. [2020-10-13 09:03:50,234 INFO L78 Accepts]: Start accepts. Automaton has 17373 states and 21022 transitions. Word has length 530 [2020-10-13 09:03:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:03:50,235 INFO L479 AbstractCegarLoop]: Abstraction has 17373 states and 21022 transitions. [2020-10-13 09:03:50,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:03:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 17373 states and 21022 transitions. [2020-10-13 09:03:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-13 09:03:50,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:03:50,249 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:03:50,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 09:03:50,250 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:03:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:03:50,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2112882795, now seen corresponding path program 1 times [2020-10-13 09:03:50,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:03:50,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949460708] [2020-10-13 09:03:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:03:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:50,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:50,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:55,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:55,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-13 09:03:55,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 09:03:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 09:03:55,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 451 [2020-10-13 09:03:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:03:55,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:55,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:03:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:55,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:55,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:03:55,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:55,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:03:55,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:03:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:55,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:55,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:03:55,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 09:03:55,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:55,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:03:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:55,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:55,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:55,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:03:55,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:03:55,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:03:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:55,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:55,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:03:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:55,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:55,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:03:55,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 09:03:55,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:03:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 09:03:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 09:03:55,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:55,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-13 09:03:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:03:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:03:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:03:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:03:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:03:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:03:55,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:03:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:03:55,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:03:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:03:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:03:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-10-13 09:03:55,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949460708] [2020-10-13 09:03:55,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:03:55,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 09:03:55,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407859902] [2020-10-13 09:03:55,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 09:03:55,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:03:55,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 09:03:55,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 09:03:55,836 INFO L87 Difference]: Start difference. First operand 17373 states and 21022 transitions. Second operand 5 states. [2020-10-13 09:04:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:03,522 INFO L93 Difference]: Finished difference Result 35660 states and 43059 transitions. [2020-10-13 09:04:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 09:04:03,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 535 [2020-10-13 09:04:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:03,594 INFO L225 Difference]: With dead ends: 35660 [2020-10-13 09:04:03,594 INFO L226 Difference]: Without dead ends: 18293 [2020-10-13 09:04:03,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 09:04:03,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18293 states. [2020-10-13 09:04:03,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18293 to 17363. [2020-10-13 09:04:03,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17363 states. [2020-10-13 09:04:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17363 states to 17363 states and 20972 transitions. [2020-10-13 09:04:03,933 INFO L78 Accepts]: Start accepts. Automaton has 17363 states and 20972 transitions. Word has length 535 [2020-10-13 09:04:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:03,934 INFO L479 AbstractCegarLoop]: Abstraction has 17363 states and 20972 transitions. [2020-10-13 09:04:03,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 09:04:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 17363 states and 20972 transitions. [2020-10-13 09:04:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-13 09:04:03,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:03,945 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 09:04:03,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 09:04:03,946 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:03,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:03,946 INFO L82 PathProgramCache]: Analyzing trace with hash -761497577, now seen corresponding path program 1 times [2020-10-13 09:04:03,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:03,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331670309] [2020-10-13 09:04:03,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:09,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 551 [2020-10-13 09:04:09,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 09:04:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-13 09:04:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-13 09:04:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:04:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:09,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:09,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:09,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 09:04:09,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 09:04:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:09,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:09,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 09:04:09,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-13 09:04:09,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:09,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:09,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:09,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-13 09:04:09,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:09,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 09:04:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:09,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 09:04:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:04:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:10,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-13 09:04:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:10,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:10,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:04:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:04:10,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 09:04:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-13 09:04:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:10,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:10,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:04:10,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:04:10,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:04:10,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:10,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 144 proven. 189 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2020-10-13 09:04:10,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331670309] [2020-10-13 09:04:10,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:10,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 09:04:10,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534402244] [2020-10-13 09:04:10,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 09:04:10,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 09:04:10,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 09:04:10,470 INFO L87 Difference]: Start difference. First operand 17363 states and 20972 transitions. Second operand 8 states. [2020-10-13 09:04:23,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:23,173 INFO L93 Difference]: Finished difference Result 38460 states and 46498 transitions. [2020-10-13 09:04:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 09:04:23,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 535 [2020-10-13 09:04:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:23,236 INFO L225 Difference]: With dead ends: 38460 [2020-10-13 09:04:23,236 INFO L226 Difference]: Without dead ends: 21103 [2020-10-13 09:04:23,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-13 09:04:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21103 states. [2020-10-13 09:04:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21103 to 20153. [2020-10-13 09:04:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2020-10-13 09:04:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 24155 transitions. [2020-10-13 09:04:23,635 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 24155 transitions. Word has length 535 [2020-10-13 09:04:23,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:23,636 INFO L479 AbstractCegarLoop]: Abstraction has 20153 states and 24155 transitions. [2020-10-13 09:04:23,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 09:04:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 24155 transitions. [2020-10-13 09:04:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-13 09:04:23,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:23,650 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-13 09:04:23,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 09:04:23,650 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:23,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:23,651 INFO L82 PathProgramCache]: Analyzing trace with hash -2075160870, now seen corresponding path program 1 times [2020-10-13 09:04:23,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:23,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298935437] [2020-10-13 09:04:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:26,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 557 [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2858 [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 09:04:26,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:26,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:26,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:26,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:26,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:26,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:04:26,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:26,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:26,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:26,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:26,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 09:04:26,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:04:26,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-13 09:04:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 09:04:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:26,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 09:04:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:27,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-13 09:04:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:27,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 09:04:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:27,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 09:04:27,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 09:04:27,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-13 09:04:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:27,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:04:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:04:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:04:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 113 proven. 156 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-13 09:04:27,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298935437] [2020-10-13 09:04:27,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:27,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:27,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88452802] [2020-10-13 09:04:27,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:27,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:27,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:27,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:27,308 INFO L87 Difference]: Start difference. First operand 20153 states and 24155 transitions. Second operand 7 states. [2020-10-13 09:04:39,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 09:04:39,836 INFO L93 Difference]: Finished difference Result 42826 states and 51441 transitions. [2020-10-13 09:04:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 09:04:39,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-13 09:04:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 09:04:39,885 INFO L225 Difference]: With dead ends: 42826 [2020-10-13 09:04:39,886 INFO L226 Difference]: Without dead ends: 22679 [2020-10-13 09:04:39,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 09:04:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22679 states. [2020-10-13 09:04:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22679 to 22043. [2020-10-13 09:04:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22043 states. [2020-10-13 09:04:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22043 states to 22043 states and 26111 transitions. [2020-10-13 09:04:40,237 INFO L78 Accepts]: Start accepts. Automaton has 22043 states and 26111 transitions. Word has length 541 [2020-10-13 09:04:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 09:04:40,237 INFO L479 AbstractCegarLoop]: Abstraction has 22043 states and 26111 transitions. [2020-10-13 09:04:40,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 09:04:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 22043 states and 26111 transitions. [2020-10-13 09:04:40,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-10-13 09:04:40,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 09:04:40,250 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-13 09:04:40,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 09:04:40,251 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 09:04:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 09:04:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash 210546376, now seen corresponding path program 1 times [2020-10-13 09:04:40,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 09:04:40,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158487249] [2020-10-13 09:04:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 09:04:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:40,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 602 [2020-10-13 09:04:45,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 09:04:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 09:04:45,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-13 09:04:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-13 09:04:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:45,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 09:04:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 09:04:45,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:45,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 09:04:45,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:45,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:45,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 09:04:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 09:04:45,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 09:04:45,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 09:04:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 09:04:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-13 09:04:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:45,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-13 09:04:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:45,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:45,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 09:04:45,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 09:04:45,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 09:04:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 09:04:45,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 09:04:45,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-13 09:04:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:46,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:46,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 09:04:46,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 09:04:46,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 09:04:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:46,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-10-13 09:04:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 09:04:46,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 09:04:46,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 09:04:46,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 09:04:46,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 09:04:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 09:04:46,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 09:04:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 09:04:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 09:04:46,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 09:04:46,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 09:04:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 144 proven. 189 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2020-10-13 09:04:46,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158487249] [2020-10-13 09:04:46,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 09:04:46,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 09:04:46,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392106213] [2020-10-13 09:04:46,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 09:04:46,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 09:04:46,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 09:04:46,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 09:04:46,363 INFO L87 Difference]: Start difference. First operand 22043 states and 26111 transitions. Second operand 7 states.