/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/Problem11_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:10:24,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:10:24,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:10:24,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:10:24,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:10:24,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:10:24,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:10:24,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:10:24,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:10:24,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:10:24,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:10:24,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:10:24,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:10:24,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:10:24,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:10:24,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:10:24,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:10:24,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:10:24,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:10:24,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:10:24,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:10:24,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:10:24,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:10:24,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:10:24,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:10:24,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:10:24,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:10:24,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:10:24,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:10:24,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:10:24,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:10:24,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:10:24,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:10:24,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:10:24,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:10:24,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:10:24,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:10:24,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:10:24,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:10:24,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:10:24,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:10:24,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:10:24,580 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:10:24,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:10:24,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:10:24,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:10:24,584 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:10:24,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:10:24,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:10:24,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:10:24,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:10:24,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:10:24,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:10:24,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:10:24,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:10:24,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:10:24,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:10:24,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:10:24,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:10:24,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:10:24,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:10:24,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:10:24,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:10:24,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:10:24,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:10:24,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:10:24,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:10:24,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:10:24,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:10:24,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:10:24,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:10:24,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:10:24,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:10:24,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:10:24,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:10:24,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:10:24,933 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:10:24,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-13 08:10:25,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57be221d3/e3126823ed474885bcfb6b88df5257e9/FLAG6eae27a65 [2020-10-13 08:10:25,729 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:10:25,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label40.c [2020-10-13 08:10:25,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57be221d3/e3126823ed474885bcfb6b88df5257e9/FLAG6eae27a65 [2020-10-13 08:10:25,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57be221d3/e3126823ed474885bcfb6b88df5257e9 [2020-10-13 08:10:25,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:10:25,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:10:25,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:10:25,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:10:25,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:10:25,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:25" (1/1) ... [2020-10-13 08:10:25,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336c4a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:25, skipping insertion in model container [2020-10-13 08:10:25,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:25" (1/1) ... [2020-10-13 08:10:25,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:10:26,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:10:26,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:10:26,827 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:10:26,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:10:27,004 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:10:27,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27 WrapperNode [2020-10-13 08:10:27,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:10:27,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:10:27,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:10:27,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:10:27,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... [2020-10-13 08:10:27,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... [2020-10-13 08:10:27,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... [2020-10-13 08:10:27,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... [2020-10-13 08:10:27,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... [2020-10-13 08:10:27,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... [2020-10-13 08:10:27,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... [2020-10-13 08:10:27,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:10:27,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:10:27,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:10:27,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:10:27,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:10:27,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:10:27,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:10:27,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:10:27,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:10:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:10:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:10:27,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:10:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:10:27,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:10:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:10:27,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:10:29,069 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:10:29,069 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:10:29,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:29 BoogieIcfgContainer [2020-10-13 08:10:29,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:10:29,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:10:29,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:10:29,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:10:29,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:10:25" (1/3) ... [2020-10-13 08:10:29,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c723d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:10:29, skipping insertion in model container [2020-10-13 08:10:29,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:27" (2/3) ... [2020-10-13 08:10:29,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c723d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:10:29, skipping insertion in model container [2020-10-13 08:10:29,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:29" (3/3) ... [2020-10-13 08:10:29,089 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label40.c [2020-10-13 08:10:29,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:10:29,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:10:29,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:10:29,167 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:10:29,168 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:10:29,168 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:10:29,168 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:10:29,168 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:10:29,168 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:10:29,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:10:29,169 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:10:29,200 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-10-13 08:10:29,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 08:10:29,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:29,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:29,213 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:29,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:29,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1611366285, now seen corresponding path program 1 times [2020-10-13 08:10:29,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:29,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117377989] [2020-10-13 08:10:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:29,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:29,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 08:10:29,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:29,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-13 08:10:29,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:29,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:10:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:10:29,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 08:10:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:10:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:30,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:30,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:30,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 08:10:30,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:30,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:10:30,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:10:30,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117377989] [2020-10-13 08:10:30,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:10:30,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:10:30,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251058779] [2020-10-13 08:10:30,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:10:30,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:30,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:10:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:10:30,164 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-10-13 08:10:32,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:32,677 INFO L93 Difference]: Finished difference Result 791 states and 1386 transitions. [2020-10-13 08:10:32,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:10:32,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-13 08:10:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:32,698 INFO L225 Difference]: With dead ends: 791 [2020-10-13 08:10:32,699 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 08:10:32,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:10:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 08:10:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-13 08:10:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 08:10:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 618 transitions. [2020-10-13 08:10:32,795 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 618 transitions. Word has length 50 [2020-10-13 08:10:32,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:32,796 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 618 transitions. [2020-10-13 08:10:32,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:10:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 618 transitions. [2020-10-13 08:10:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 08:10:32,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:32,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:32,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:10:32,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:32,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1777722578, now seen corresponding path program 1 times [2020-10-13 08:10:32,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:32,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665741390] [2020-10-13 08:10:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:33,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:34,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:34,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:10:34,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:10:34,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-10-13 08:10:34,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 08:10:34,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 08:10:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:10:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:34,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:34,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:10:34,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:34,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:34,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:34,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:10:34,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:10:34,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:10:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:10:34,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665741390] [2020-10-13 08:10:34,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:34,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:10:34,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108059201] [2020-10-13 08:10:34,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:10:34,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:34,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:10:34,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:10:34,858 INFO L87 Difference]: Start difference. First operand 430 states and 618 transitions. Second operand 5 states. [2020-10-13 08:10:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:36,461 INFO L93 Difference]: Finished difference Result 879 states and 1263 transitions. [2020-10-13 08:10:36,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:10:36,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-10-13 08:10:36,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:36,466 INFO L225 Difference]: With dead ends: 879 [2020-10-13 08:10:36,466 INFO L226 Difference]: Without dead ends: 434 [2020-10-13 08:10:36,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:10:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-13 08:10:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2020-10-13 08:10:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 08:10:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 616 transitions. [2020-10-13 08:10:36,503 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 616 transitions. Word has length 122 [2020-10-13 08:10:36,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:36,503 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 616 transitions. [2020-10-13 08:10:36,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:10:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 616 transitions. [2020-10-13 08:10:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 08:10:36,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:36,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:36,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:10:36,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:36,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1954307045, now seen corresponding path program 1 times [2020-10-13 08:10:36,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:36,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859002272] [2020-10-13 08:10:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:37,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:37,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 08:10:37,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-13 08:10:37,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-13 08:10:37,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:10:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:37,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:37,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:37,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:37,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:10:37,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:37,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:37,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:37,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:38,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:38,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 08:10:38,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 08:10:38,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:38,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 08:10:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:10:38,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859002272] [2020-10-13 08:10:38,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:38,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:10:38,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146913944] [2020-10-13 08:10:38,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:10:38,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:38,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:10:38,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:10:38,191 INFO L87 Difference]: Start difference. First operand 430 states and 616 transitions. Second operand 5 states. [2020-10-13 08:10:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:40,654 INFO L93 Difference]: Finished difference Result 1062 states and 1569 transitions. [2020-10-13 08:10:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:10:40,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 08:10:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:40,661 INFO L225 Difference]: With dead ends: 1062 [2020-10-13 08:10:40,661 INFO L226 Difference]: Without dead ends: 638 [2020-10-13 08:10:40,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:10:40,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-13 08:10:40,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 634. [2020-10-13 08:10:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-13 08:10:40,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 908 transitions. [2020-10-13 08:10:40,697 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 908 transitions. Word has length 123 [2020-10-13 08:10:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:40,700 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 908 transitions. [2020-10-13 08:10:40,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:10:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 908 transitions. [2020-10-13 08:10:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 08:10:40,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:40,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:40,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:10:40,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1578152274, now seen corresponding path program 1 times [2020-10-13 08:10:40,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:40,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378715376] [2020-10-13 08:10:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:41,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:42,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:42,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 08:10:42,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:10:42,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-10-13 08:10:42,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 08:10:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 08:10:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:42,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:42,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:42,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:42,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:42,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:42,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 08:10:42,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:42,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 08:10:42,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 08:10:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:10:42,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378715376] [2020-10-13 08:10:42,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:42,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:10:42,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079806296] [2020-10-13 08:10:42,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:10:42,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:42,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:10:42,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:10:42,611 INFO L87 Difference]: Start difference. First operand 634 states and 908 transitions. Second operand 5 states. [2020-10-13 08:10:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:44,171 INFO L93 Difference]: Finished difference Result 1284 states and 1847 transitions. [2020-10-13 08:10:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:10:44,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-13 08:10:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:44,177 INFO L225 Difference]: With dead ends: 1284 [2020-10-13 08:10:44,177 INFO L226 Difference]: Without dead ends: 638 [2020-10-13 08:10:44,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:10:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-13 08:10:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 634. [2020-10-13 08:10:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-13 08:10:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 905 transitions. [2020-10-13 08:10:44,212 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 905 transitions. Word has length 124 [2020-10-13 08:10:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:44,213 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 905 transitions. [2020-10-13 08:10:44,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:10:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 905 transitions. [2020-10-13 08:10:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 08:10:44,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:44,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:44,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:10:44,216 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:44,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1193116118, now seen corresponding path program 1 times [2020-10-13 08:10:44,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:44,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981525217] [2020-10-13 08:10:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:44,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:45,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 08:10:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-13 08:10:45,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-13 08:10:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:10:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:45,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:45,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:45,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:45,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:45,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:10:45,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:45,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:45,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:45,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:45,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:45,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:45,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:10:45,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 08:10:45,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:10:45,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:10:45,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981525217] [2020-10-13 08:10:45,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:45,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:10:45,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728452145] [2020-10-13 08:10:45,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:10:45,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:45,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:10:45,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:10:45,363 INFO L87 Difference]: Start difference. First operand 634 states and 905 transitions. Second operand 5 states. [2020-10-13 08:10:48,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:48,113 INFO L93 Difference]: Finished difference Result 1854 states and 2695 transitions. [2020-10-13 08:10:48,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:10:48,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-13 08:10:48,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:48,124 INFO L225 Difference]: With dead ends: 1854 [2020-10-13 08:10:48,125 INFO L226 Difference]: Without dead ends: 1226 [2020-10-13 08:10:48,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:10:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2020-10-13 08:10:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1208. [2020-10-13 08:10:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2020-10-13 08:10:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1672 transitions. [2020-10-13 08:10:48,161 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1672 transitions. Word has length 136 [2020-10-13 08:10:48,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:48,162 INFO L479 AbstractCegarLoop]: Abstraction has 1208 states and 1672 transitions. [2020-10-13 08:10:48,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:10:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1672 transitions. [2020-10-13 08:10:48,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 08:10:48,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:48,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:10:48,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:10:48,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:48,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:48,165 INFO L82 PathProgramCache]: Analyzing trace with hash 462412102, now seen corresponding path program 1 times [2020-10-13 08:10:48,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:48,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482733219] [2020-10-13 08:10:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:48,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:48,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:10:48,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-13 08:10:48,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:10:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:10:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-13 08:10:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:48,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:48,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:48,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:48,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:48,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 08:10:48,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:10:48,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:48,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:48,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:10:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 08:10:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:10:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:10:48,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482733219] [2020-10-13 08:10:48,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:10:48,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 08:10:48,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181073658] [2020-10-13 08:10:48,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:48,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:48,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:48,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:48,975 INFO L87 Difference]: Start difference. First operand 1208 states and 1672 transitions. Second operand 7 states. [2020-10-13 08:10:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:51,265 INFO L93 Difference]: Finished difference Result 2829 states and 3911 transitions. [2020-10-13 08:10:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:10:51,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-13 08:10:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:51,275 INFO L225 Difference]: With dead ends: 2829 [2020-10-13 08:10:51,276 INFO L226 Difference]: Without dead ends: 1627 [2020-10-13 08:10:51,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:10:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-10-13 08:10:51,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1428. [2020-10-13 08:10:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-13 08:10:51,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1944 transitions. [2020-10-13 08:10:51,342 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1944 transitions. Word has length 144 [2020-10-13 08:10:51,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:51,343 INFO L479 AbstractCegarLoop]: Abstraction has 1428 states and 1944 transitions. [2020-10-13 08:10:51,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:10:51,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1944 transitions. [2020-10-13 08:10:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-13 08:10:51,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:51,349 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:10:51,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:10:51,349 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:51,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:51,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2102352748, now seen corresponding path program 1 times [2020-10-13 08:10:51,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:51,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536054806] [2020-10-13 08:10:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:51,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:52,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:52,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 08:10:52,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:10:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-10-13 08:10:52,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-13 08:10:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:10:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:53,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:53,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:53,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:53,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:53,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:53,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:53,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:53,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:53,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:53,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:10:53,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:10:53,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:53,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:10:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:53,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:53,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 08:10:53,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:10:53,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:53,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:53,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:53,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 08:10:53,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-13 08:10:53,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536054806] [2020-10-13 08:10:53,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:53,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:10:53,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813134644] [2020-10-13 08:10:53,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:10:53,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:53,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:10:53,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:10:53,338 INFO L87 Difference]: Start difference. First operand 1428 states and 1944 transitions. Second operand 5 states. [2020-10-13 08:10:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:10:55,689 INFO L93 Difference]: Finished difference Result 3845 states and 5489 transitions. [2020-10-13 08:10:55,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:10:55,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-13 08:10:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:10:55,710 INFO L225 Difference]: With dead ends: 3845 [2020-10-13 08:10:55,711 INFO L226 Difference]: Without dead ends: 2611 [2020-10-13 08:10:55,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:10:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-10-13 08:10:55,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2601. [2020-10-13 08:10:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2020-10-13 08:10:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3558 transitions. [2020-10-13 08:10:55,858 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3558 transitions. Word has length 258 [2020-10-13 08:10:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:10:55,859 INFO L479 AbstractCegarLoop]: Abstraction has 2601 states and 3558 transitions. [2020-10-13 08:10:55,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:10:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3558 transitions. [2020-10-13 08:10:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 08:10:55,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:10:55,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:10:55,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:10:55,866 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:10:55,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:10:55,867 INFO L82 PathProgramCache]: Analyzing trace with hash -2134512577, now seen corresponding path program 1 times [2020-10-13 08:10:55,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:10:55,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419986420] [2020-10-13 08:10:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:10:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-13 08:10:57,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:10:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-10-13 08:10:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:57,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 08:10:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:10:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:10:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:10:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:57,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:57,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:57,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:10:57,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:10:57,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:57,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:10:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:10:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:10:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:57,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:57,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:10:57,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-13 08:10:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:10:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:10:57,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 08:10:57,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:10:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:10:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:10:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:10:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:10:58,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:10:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:10:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 08:10:58,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:10:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:10:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:10:58,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:10:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:10:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:10:58,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419986420] [2020-10-13 08:10:58,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:10:58,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:10:58,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538091727] [2020-10-13 08:10:58,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:10:58,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:10:58,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:10:58,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:10:58,241 INFO L87 Difference]: Start difference. First operand 2601 states and 3558 transitions. Second operand 7 states. [2020-10-13 08:11:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:00,973 INFO L93 Difference]: Finished difference Result 6018 states and 8416 transitions. [2020-10-13 08:11:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:11:00,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-13 08:11:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:00,990 INFO L225 Difference]: With dead ends: 6018 [2020-10-13 08:11:00,990 INFO L226 Difference]: Without dead ends: 3611 [2020-10-13 08:11:00,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 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 08:11:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2020-10-13 08:11:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 3595. [2020-10-13 08:11:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3595 states. [2020-10-13 08:11:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4713 transitions. [2020-10-13 08:11:01,103 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4713 transitions. Word has length 260 [2020-10-13 08:11:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:01,104 INFO L479 AbstractCegarLoop]: Abstraction has 3595 states and 4713 transitions. [2020-10-13 08:11:01,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4713 transitions. [2020-10-13 08:11:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-13 08:11:01,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:01,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:01,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:11:01,112 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:01,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:01,112 INFO L82 PathProgramCache]: Analyzing trace with hash -22812533, now seen corresponding path program 1 times [2020-10-13 08:11:01,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:01,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145404762] [2020-10-13 08:11:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:01,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:02,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-13 08:11:02,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:02,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1090 [2020-10-13 08:11:02,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 08:11:02,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:11:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:02,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:02,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:02,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:11:02,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:02,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:02,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:02,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:02,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:02,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:11:02,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:02,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 08:11:02,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:02,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:02,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:02,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 08:11:02,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:11:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:02,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:02,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:02,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 08:11:02,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:02,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:11:03,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145404762] [2020-10-13 08:11:03,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:03,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:03,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137375430] [2020-10-13 08:11:03,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:03,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:03,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:03,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:03,027 INFO L87 Difference]: Start difference. First operand 3595 states and 4713 transitions. Second operand 7 states. [2020-10-13 08:11:05,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:05,750 INFO L93 Difference]: Finished difference Result 7808 states and 10455 transitions. [2020-10-13 08:11:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 08:11:05,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-13 08:11:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:05,775 INFO L225 Difference]: With dead ends: 7808 [2020-10-13 08:11:05,775 INFO L226 Difference]: Without dead ends: 4402 [2020-10-13 08:11:05,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:11:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4402 states. [2020-10-13 08:11:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4402 to 4373. [2020-10-13 08:11:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4373 states. [2020-10-13 08:11:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 5572 transitions. [2020-10-13 08:11:05,904 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 5572 transitions. Word has length 270 [2020-10-13 08:11:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:05,905 INFO L479 AbstractCegarLoop]: Abstraction has 4373 states and 5572 transitions. [2020-10-13 08:11:05,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 5572 transitions. [2020-10-13 08:11:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-13 08:11:05,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:05,913 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:05,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:11:05,914 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash -640452945, now seen corresponding path program 1 times [2020-10-13 08:11:05,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:05,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194470021] [2020-10-13 08:11:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:06,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:06,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:06,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 08:11:06,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-13 08:11:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:06,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:11:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 08:11:06,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:06,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:06,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:06,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:06,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:06,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 08:11:06,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:06,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:11:06,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:06,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:06,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:06,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 08:11:06,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:06,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:06,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:07,032 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:11:07,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194470021] [2020-10-13 08:11:07,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:07,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:07,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034939788] [2020-10-13 08:11:07,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:07,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:07,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:07,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:07,035 INFO L87 Difference]: Start difference. First operand 4373 states and 5572 transitions. Second operand 7 states. [2020-10-13 08:11:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:10,836 INFO L93 Difference]: Finished difference Result 9610 states and 12549 transitions. [2020-10-13 08:11:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:11:10,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-10-13 08:11:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:10,863 INFO L225 Difference]: With dead ends: 9610 [2020-10-13 08:11:10,863 INFO L226 Difference]: Without dead ends: 5621 [2020-10-13 08:11:10,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 08:11:10,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2020-10-13 08:11:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 5588. [2020-10-13 08:11:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5588 states. [2020-10-13 08:11:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 7200 transitions. [2020-10-13 08:11:11,031 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 7200 transitions. Word has length 275 [2020-10-13 08:11:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:11,031 INFO L479 AbstractCegarLoop]: Abstraction has 5588 states and 7200 transitions. [2020-10-13 08:11:11,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 7200 transitions. [2020-10-13 08:11:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-13 08:11:11,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:11,046 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:11,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:11:11,047 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:11,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:11,047 INFO L82 PathProgramCache]: Analyzing trace with hash -564895750, now seen corresponding path program 1 times [2020-10-13 08:11:11,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:11,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920034093] [2020-10-13 08:11:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-13 08:11:12,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-10-13 08:11:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:11:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:11:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:12,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:12,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:12,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:12,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:11:12,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 08:11:12,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 08:11:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:11:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:13,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-13 08:11:13,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:13,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 08:11:13,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920034093] [2020-10-13 08:11:13,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:13,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:13,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422602388] [2020-10-13 08:11:13,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:13,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:13,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:13,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:13,356 INFO L87 Difference]: Start difference. First operand 5588 states and 7200 transitions. Second operand 7 states. [2020-10-13 08:11:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:16,467 INFO L93 Difference]: Finished difference Result 11819 states and 15506 transitions. [2020-10-13 08:11:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:11:16,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-13 08:11:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:16,505 INFO L225 Difference]: With dead ends: 11819 [2020-10-13 08:11:16,505 INFO L226 Difference]: Without dead ends: 6615 [2020-10-13 08:11:16,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 08:11:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6615 states. [2020-10-13 08:11:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6615 to 6570. [2020-10-13 08:11:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6570 states. [2020-10-13 08:11:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 8360 transitions. [2020-10-13 08:11:16,680 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 8360 transitions. Word has length 291 [2020-10-13 08:11:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:16,680 INFO L479 AbstractCegarLoop]: Abstraction has 6570 states and 8360 transitions. [2020-10-13 08:11:16,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 8360 transitions. [2020-10-13 08:11:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-13 08:11:16,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:16,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:16,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:11:16,691 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1532186560, now seen corresponding path program 1 times [2020-10-13 08:11:16,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:16,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812136568] [2020-10-13 08:11:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-13 08:11:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 08:11:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2450 [2020-10-13 08:11:19,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:19,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-13 08:11:19,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:19,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:11:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:19,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:11:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:19,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:19,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:19,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:11:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:19,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 08:11:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 08:11:19,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812136568] [2020-10-13 08:11:19,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:11:19,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:11:19,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313156829] [2020-10-13 08:11:19,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:19,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:19,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:19,578 INFO L87 Difference]: Start difference. First operand 6570 states and 8360 transitions. Second operand 5 states. [2020-10-13 08:11:20,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:20,978 INFO L93 Difference]: Finished difference Result 12758 states and 16327 transitions. [2020-10-13 08:11:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:20,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 295 [2020-10-13 08:11:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:21,001 INFO L225 Difference]: With dead ends: 12758 [2020-10-13 08:11:21,001 INFO L226 Difference]: Without dead ends: 6572 [2020-10-13 08:11:21,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 08:11:21,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2020-10-13 08:11:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 6551. [2020-10-13 08:11:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6551 states. [2020-10-13 08:11:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 8317 transitions. [2020-10-13 08:11:21,151 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 8317 transitions. Word has length 295 [2020-10-13 08:11:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:21,151 INFO L479 AbstractCegarLoop]: Abstraction has 6551 states and 8317 transitions. [2020-10-13 08:11:21,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 8317 transitions. [2020-10-13 08:11:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-13 08:11:21,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:21,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:21,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:11:21,162 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:21,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2131541444, now seen corresponding path program 1 times [2020-10-13 08:11:21,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:21,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511639845] [2020-10-13 08:11:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:21,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:21,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-13 08:11:21,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:21,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-13 08:11:21,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-13 08:11:21,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:11:21,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:21,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:21,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:21,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:21,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:21,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:21,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:21,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:21,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:21,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:21,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:21,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:11:21,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:11:21,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:11:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:21,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:21,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:21,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 08:11:21,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:21,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 08:11:21,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-13 08:11:22,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511639845] [2020-10-13 08:11:22,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:22,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:22,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448986418] [2020-10-13 08:11:22,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:22,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:22,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:22,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:22,032 INFO L87 Difference]: Start difference. First operand 6551 states and 8317 transitions. Second operand 5 states. [2020-10-13 08:11:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:24,253 INFO L93 Difference]: Finished difference Result 15076 states and 19797 transitions. [2020-10-13 08:11:24,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:24,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 297 [2020-10-13 08:11:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:24,287 INFO L225 Difference]: With dead ends: 15076 [2020-10-13 08:11:24,288 INFO L226 Difference]: Without dead ends: 8909 [2020-10-13 08:11:24,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:24,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2020-10-13 08:11:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 8882. [2020-10-13 08:11:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8882 states. [2020-10-13 08:11:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8882 states to 8882 states and 11593 transitions. [2020-10-13 08:11:24,498 INFO L78 Accepts]: Start accepts. Automaton has 8882 states and 11593 transitions. Word has length 297 [2020-10-13 08:11:24,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:24,499 INFO L479 AbstractCegarLoop]: Abstraction has 8882 states and 11593 transitions. [2020-10-13 08:11:24,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 8882 states and 11593 transitions. [2020-10-13 08:11:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 08:11:24,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:24,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:24,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 08:11:24,531 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:24,531 INFO L82 PathProgramCache]: Analyzing trace with hash -456576238, now seen corresponding path program 1 times [2020-10-13 08:11:24,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:24,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315854657] [2020-10-13 08:11:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:27,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:27,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-13 08:11:27,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:11:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2698 [2020-10-13 08:11:27,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-13 08:11:27,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:11:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:27,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:27,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:11:27,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:27,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:27,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:27,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:27,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:27,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:27,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 08:11:27,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:27,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:27,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:27,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 08:11:27,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:27,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 08:11:27,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:27,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:27,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-13 08:11:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 08:11:28,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315854657] [2020-10-13 08:11:28,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:28,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:28,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052538908] [2020-10-13 08:11:28,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:28,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:28,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:28,073 INFO L87 Difference]: Start difference. First operand 8882 states and 11593 transitions. Second operand 5 states. [2020-10-13 08:11:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:29,618 INFO L93 Difference]: Finished difference Result 17414 states and 22902 transitions. [2020-10-13 08:11:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:29,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-13 08:11:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:29,648 INFO L225 Difference]: With dead ends: 17414 [2020-10-13 08:11:29,648 INFO L226 Difference]: Without dead ends: 8904 [2020-10-13 08:11:29,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8904 states. [2020-10-13 08:11:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8904 to 8882. [2020-10-13 08:11:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8882 states. [2020-10-13 08:11:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8882 states to 8882 states and 11569 transitions. [2020-10-13 08:11:29,870 INFO L78 Accepts]: Start accepts. Automaton has 8882 states and 11569 transitions. Word has length 334 [2020-10-13 08:11:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:29,871 INFO L479 AbstractCegarLoop]: Abstraction has 8882 states and 11569 transitions. [2020-10-13 08:11:29,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8882 states and 11569 transitions. [2020-10-13 08:11:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-13 08:11:29,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:29,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:29,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 08:11:29,889 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:29,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1990223080, now seen corresponding path program 1 times [2020-10-13 08:11:29,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:29,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779053650] [2020-10-13 08:11:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:30,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:30,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:30,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-13 08:11:30,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:11:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-13 08:11:30,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 300 [2020-10-13 08:11:30,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:30,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:30,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:30,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:30,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:30,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:30,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:30,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:30,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:30,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:30,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:30,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 08:11:30,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:30,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:30,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:30,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:30,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:11:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-13 08:11:31,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 08:11:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:11:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 08:11:31,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779053650] [2020-10-13 08:11:31,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:11:31,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 08:11:31,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293965139] [2020-10-13 08:11:31,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:31,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:31,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:31,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:31,243 INFO L87 Difference]: Start difference. First operand 8882 states and 11569 transitions. Second operand 5 states. [2020-10-13 08:11:32,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:32,648 INFO L93 Difference]: Finished difference Result 17401 states and 22764 transitions. [2020-10-13 08:11:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:32,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 340 [2020-10-13 08:11:32,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:32,676 INFO L225 Difference]: With dead ends: 17401 [2020-10-13 08:11:32,677 INFO L226 Difference]: Without dead ends: 8903 [2020-10-13 08:11:32,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 08:11:32,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2020-10-13 08:11:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8881. [2020-10-13 08:11:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8881 states. [2020-10-13 08:11:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8881 states to 8881 states and 11564 transitions. [2020-10-13 08:11:32,875 INFO L78 Accepts]: Start accepts. Automaton has 8881 states and 11564 transitions. Word has length 340 [2020-10-13 08:11:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:32,876 INFO L479 AbstractCegarLoop]: Abstraction has 8881 states and 11564 transitions. [2020-10-13 08:11:32,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 8881 states and 11564 transitions. [2020-10-13 08:11:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-13 08:11:32,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:32,895 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:32,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 08:11:32,895 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:32,896 INFO L82 PathProgramCache]: Analyzing trace with hash 249720626, now seen corresponding path program 1 times [2020-10-13 08:11:32,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:32,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095043350] [2020-10-13 08:11:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:34,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:34,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-13 08:11:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1695 [2020-10-13 08:11:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-13 08:11:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 08:11:34,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:34,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:34,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:34,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:34,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:34,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:34,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:34,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:34,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:34,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:34,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 08:11:34,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:11:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:34,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:34,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:11:34,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:34,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:11:34,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:34,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:11:34,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:35,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 08:11:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:35,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:35,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:35,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:35,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:35,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:11:35,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:11:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 200 proven. 69 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 08:11:35,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095043350] [2020-10-13 08:11:35,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:35,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:35,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488317772] [2020-10-13 08:11:35,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:35,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:35,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:35,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:35,125 INFO L87 Difference]: Start difference. First operand 8881 states and 11564 transitions. Second operand 7 states. [2020-10-13 08:11:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:37,826 INFO L93 Difference]: Finished difference Result 19194 states and 25291 transitions. [2020-10-13 08:11:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:11:37,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-13 08:11:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:37,850 INFO L225 Difference]: With dead ends: 19194 [2020-10-13 08:11:37,850 INFO L226 Difference]: Without dead ends: 10697 [2020-10-13 08:11:37,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 08:11:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2020-10-13 08:11:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 10461. [2020-10-13 08:11:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10461 states. [2020-10-13 08:11:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 13508 transitions. [2020-10-13 08:11:38,069 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 13508 transitions. Word has length 345 [2020-10-13 08:11:38,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:38,070 INFO L479 AbstractCegarLoop]: Abstraction has 10461 states and 13508 transitions. [2020-10-13 08:11:38,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 13508 transitions. [2020-10-13 08:11:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-13 08:11:38,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:38,083 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:38,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 08:11:38,084 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:38,084 INFO L82 PathProgramCache]: Analyzing trace with hash -205006622, now seen corresponding path program 1 times [2020-10-13 08:11:38,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:38,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978371682] [2020-10-13 08:11:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:38,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:42,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:42,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-13 08:11:42,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 08:11:42,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4213 [2020-10-13 08:11:42,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 310 [2020-10-13 08:11:42,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:11:42,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:42,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:42,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:42,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:42,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:42,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:42,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:42,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:42,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:42,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:42,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:42,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:42,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:11:42,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:11:42,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:42,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:11:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:42,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:42,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:11:42,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 08:11:42,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:42,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:11:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:42,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:42,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 08:11:42,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:11:42,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-13 08:11:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2020-10-13 08:11:42,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978371682] [2020-10-13 08:11:42,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:42,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:42,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441692664] [2020-10-13 08:11:42,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:42,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:42,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:42,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:42,864 INFO L87 Difference]: Start difference. First operand 10461 states and 13508 transitions. Second operand 5 states. [2020-10-13 08:11:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:44,431 INFO L93 Difference]: Finished difference Result 20580 states and 26738 transitions. [2020-10-13 08:11:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:44,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 346 [2020-10-13 08:11:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:44,454 INFO L225 Difference]: With dead ends: 20580 [2020-10-13 08:11:44,454 INFO L226 Difference]: Without dead ends: 10491 [2020-10-13 08:11:44,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10491 states. [2020-10-13 08:11:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10491 to 10461. [2020-10-13 08:11:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10461 states. [2020-10-13 08:11:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 13496 transitions. [2020-10-13 08:11:44,662 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 13496 transitions. Word has length 346 [2020-10-13 08:11:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:44,663 INFO L479 AbstractCegarLoop]: Abstraction has 10461 states and 13496 transitions. [2020-10-13 08:11:44,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 13496 transitions. [2020-10-13 08:11:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-13 08:11:44,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:44,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:11:44,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 08:11:44,679 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:44,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1853162177, now seen corresponding path program 1 times [2020-10-13 08:11:44,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:44,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677480990] [2020-10-13 08:11:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:46,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 363 [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 217 [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:11:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:46,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:46,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:46,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:46,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:46,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:11:46,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:46,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:11:46,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:11:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:46,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:46,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:46,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:11:46,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 08:11:46,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:46,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 08:11:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-13 08:11:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:46,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:46,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:11:46,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-13 08:11:46,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677480990] [2020-10-13 08:11:46,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:46,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:46,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109673357] [2020-10-13 08:11:46,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:46,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:46,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:46,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:46,664 INFO L87 Difference]: Start difference. First operand 10461 states and 13496 transitions. Second operand 7 states. [2020-10-13 08:11:49,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:49,541 INFO L93 Difference]: Finished difference Result 22976 states and 30419 transitions. [2020-10-13 08:11:49,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:11:49,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-13 08:11:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:49,576 INFO L225 Difference]: With dead ends: 22976 [2020-10-13 08:11:49,577 INFO L226 Difference]: Without dead ends: 12899 [2020-10-13 08:11:49,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 08:11:49,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12899 states. [2020-10-13 08:11:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12899 to 12823. [2020-10-13 08:11:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12823 states. [2020-10-13 08:11:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12823 states to 12823 states and 16559 transitions. [2020-10-13 08:11:49,916 INFO L78 Accepts]: Start accepts. Automaton has 12823 states and 16559 transitions. Word has length 349 [2020-10-13 08:11:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:49,917 INFO L479 AbstractCegarLoop]: Abstraction has 12823 states and 16559 transitions. [2020-10-13 08:11:49,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 12823 states and 16559 transitions. [2020-10-13 08:11:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-13 08:11:49,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:49,934 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:49,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 08:11:49,934 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1457678574, now seen corresponding path program 1 times [2020-10-13 08:11:49,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:49,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155322956] [2020-10-13 08:11:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-13 08:11:50,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-13 08:11:50,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-13 08:11:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:11:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:50,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:11:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:11:50,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 08:11:50,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:50,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:11:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:11:50,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:11:50,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:50,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:50,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 08:11:50,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:50,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:11:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:50,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:50,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:11:50,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-13 08:11:50,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:11:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:11:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:11:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-13 08:11:51,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155322956] [2020-10-13 08:11:51,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:51,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:11:51,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89395319] [2020-10-13 08:11:51,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:11:51,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:51,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:11:51,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:11:51,519 INFO L87 Difference]: Start difference. First operand 12823 states and 16559 transitions. Second operand 7 states. [2020-10-13 08:11:54,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:54,458 INFO L93 Difference]: Finished difference Result 25494 states and 32997 transitions. [2020-10-13 08:11:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:11:54,459 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-13 08:11:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:54,491 INFO L225 Difference]: With dead ends: 25494 [2020-10-13 08:11:54,491 INFO L226 Difference]: Without dead ends: 13055 [2020-10-13 08:11:54,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:11:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13055 states. [2020-10-13 08:11:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13055 to 13011. [2020-10-13 08:11:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13011 states. [2020-10-13 08:11:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13011 states to 13011 states and 16770 transitions. [2020-10-13 08:11:54,741 INFO L78 Accepts]: Start accepts. Automaton has 13011 states and 16770 transitions. Word has length 356 [2020-10-13 08:11:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:54,742 INFO L479 AbstractCegarLoop]: Abstraction has 13011 states and 16770 transitions. [2020-10-13 08:11:54,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:11:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 13011 states and 16770 transitions. [2020-10-13 08:11:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-13 08:11:54,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:54,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-13 08:11:54,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 08:11:54,762 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:54,762 INFO L82 PathProgramCache]: Analyzing trace with hash 309264218, now seen corresponding path program 1 times [2020-10-13 08:11:54,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:54,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474885312] [2020-10-13 08:11:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:55,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:55,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-13 08:11:55,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:55,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-13 08:11:55,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:11:55,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-13 08:11:55,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 08:11:55,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:55,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:11:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:55,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:55,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:11:55,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:11:55,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:55,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:55,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:11:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:55,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:55,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:11:55,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:11:55,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:11:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:55,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:11:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:11:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:55,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:11:55,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 08:11:55,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:11:55,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 08:11:55,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:11:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:11:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:11:55,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-13 08:11:55,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:11:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-13 08:11:55,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474885312] [2020-10-13 08:11:55,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:11:55,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:11:55,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112775318] [2020-10-13 08:11:55,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:11:55,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:11:55,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:11:55,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:11:55,761 INFO L87 Difference]: Start difference. First operand 13011 states and 16770 transitions. Second operand 5 states. [2020-10-13 08:11:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:11:58,291 INFO L93 Difference]: Finished difference Result 27772 states and 36347 transitions. [2020-10-13 08:11:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:11:58,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 356 [2020-10-13 08:11:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:11:58,321 INFO L225 Difference]: With dead ends: 27772 [2020-10-13 08:11:58,321 INFO L226 Difference]: Without dead ends: 15145 [2020-10-13 08:11:58,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:11:58,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15145 states. [2020-10-13 08:11:58,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15145 to 14717. [2020-10-13 08:11:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14717 states. [2020-10-13 08:11:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14717 states to 14717 states and 19074 transitions. [2020-10-13 08:11:58,611 INFO L78 Accepts]: Start accepts. Automaton has 14717 states and 19074 transitions. Word has length 356 [2020-10-13 08:11:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:11:58,611 INFO L479 AbstractCegarLoop]: Abstraction has 14717 states and 19074 transitions. [2020-10-13 08:11:58,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:11:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 14717 states and 19074 transitions. [2020-10-13 08:11:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-10-13 08:11:58,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:11:58,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:11:58,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 08:11:58,631 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:11:58,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:11:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash -965783877, now seen corresponding path program 1 times [2020-10-13 08:11:58,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:11:58,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643305663] [2020-10-13 08:11:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:11:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:11:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:11:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:00,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 385 [2020-10-13 08:12:00,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-13 08:12:00,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-13 08:12:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:12:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:00,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:00,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:00,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:00,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:12:00,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:00,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:00,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:00,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:00,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:12:00,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:12:00,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:00,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:00,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:12:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:00,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:00,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 08:12:00,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 08:12:00,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:00,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 08:12:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:00,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-13 08:12:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:00,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:00,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-13 08:12:00,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643305663] [2020-10-13 08:12:00,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:00,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:12:00,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504262773] [2020-10-13 08:12:00,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:00,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:00,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:00,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:00,704 INFO L87 Difference]: Start difference. First operand 14717 states and 19074 transitions. Second operand 7 states. [2020-10-13 08:12:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:03,878 INFO L93 Difference]: Finished difference Result 32143 states and 41420 transitions. [2020-10-13 08:12:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:12:03,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 371 [2020-10-13 08:12:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:03,909 INFO L225 Difference]: With dead ends: 32143 [2020-10-13 08:12:03,909 INFO L226 Difference]: Without dead ends: 17790 [2020-10-13 08:12:03,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:12:03,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17790 states. [2020-10-13 08:12:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17790 to 14526. [2020-10-13 08:12:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14526 states. [2020-10-13 08:12:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14526 states to 14526 states and 18724 transitions. [2020-10-13 08:12:04,209 INFO L78 Accepts]: Start accepts. Automaton has 14526 states and 18724 transitions. Word has length 371 [2020-10-13 08:12:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:04,210 INFO L479 AbstractCegarLoop]: Abstraction has 14526 states and 18724 transitions. [2020-10-13 08:12:04,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14526 states and 18724 transitions. [2020-10-13 08:12:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-13 08:12:04,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:04,231 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:04,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 08:12:04,231 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:04,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:04,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1926062177, now seen corresponding path program 1 times [2020-10-13 08:12:04,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:04,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331134811] [2020-10-13 08:12:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:04,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:05,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:05,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-13 08:12:05,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-10-13 08:12:05,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-13 08:12:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:12:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:06,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:06,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:06,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:06,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:06,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:06,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:06,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:06,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 08:12:06,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:06,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:06,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:06,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:06,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:12:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 08:12:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-13 08:12:06,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331134811] [2020-10-13 08:12:06,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:06,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:12:06,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184801450] [2020-10-13 08:12:06,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:12:06,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:06,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:12:06,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:12:06,441 INFO L87 Difference]: Start difference. First operand 14526 states and 18724 transitions. Second operand 7 states. [2020-10-13 08:12:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:09,050 INFO L93 Difference]: Finished difference Result 30236 states and 39329 transitions. [2020-10-13 08:12:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:12:09,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-13 08:12:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:09,080 INFO L225 Difference]: With dead ends: 30236 [2020-10-13 08:12:09,080 INFO L226 Difference]: Without dead ends: 16094 [2020-10-13 08:12:09,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:12:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16094 states. [2020-10-13 08:12:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16094 to 15668. [2020-10-13 08:12:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15668 states. [2020-10-13 08:12:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15668 states to 15668 states and 20067 transitions. [2020-10-13 08:12:09,322 INFO L78 Accepts]: Start accepts. Automaton has 15668 states and 20067 transitions. Word has length 383 [2020-10-13 08:12:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:09,322 INFO L479 AbstractCegarLoop]: Abstraction has 15668 states and 20067 transitions. [2020-10-13 08:12:09,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:12:09,323 INFO L276 IsEmpty]: Start isEmpty. Operand 15668 states and 20067 transitions. [2020-10-13 08:12:09,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-13 08:12:09,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:09,337 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:09,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 08:12:09,338 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:09,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:09,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1804633473, now seen corresponding path program 1 times [2020-10-13 08:12:09,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:09,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303713495] [2020-10-13 08:12:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:10,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-13 08:12:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:12:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2759 [2020-10-13 08:12:12,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:12:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 254 [2020-10-13 08:12:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 08:12:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:12,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:12:12,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:12,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:12,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:12,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 08:12:12,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:12,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:12:12,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:12,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:12:12,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 08:12:12,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:12,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 08:12:12,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 08:12:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:12,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:12,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-13 08:12:12,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303713495] [2020-10-13 08:12:12,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:12,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 08:12:12,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660332721] [2020-10-13 08:12:12,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 08:12:12,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:12,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 08:12:12,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:12:12,938 INFO L87 Difference]: Start difference. First operand 15668 states and 20067 transitions. Second operand 8 states. [2020-10-13 08:12:17,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:17,335 INFO L93 Difference]: Finished difference Result 37853 states and 52332 transitions. [2020-10-13 08:12:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:12:17,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 388 [2020-10-13 08:12:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:17,426 INFO L225 Difference]: With dead ends: 37853 [2020-10-13 08:12:17,426 INFO L226 Difference]: Without dead ends: 22569 [2020-10-13 08:12:17,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 08:12:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22569 states. [2020-10-13 08:12:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22569 to 20949. [2020-10-13 08:12:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20949 states. [2020-10-13 08:12:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20949 states to 20949 states and 26351 transitions. [2020-10-13 08:12:18,022 INFO L78 Accepts]: Start accepts. Automaton has 20949 states and 26351 transitions. Word has length 388 [2020-10-13 08:12:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:18,023 INFO L479 AbstractCegarLoop]: Abstraction has 20949 states and 26351 transitions. [2020-10-13 08:12:18,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 08:12:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 20949 states and 26351 transitions. [2020-10-13 08:12:18,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-13 08:12:18,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:18,037 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:18,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 08:12:18,037 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:18,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:18,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1968266148, now seen corresponding path program 1 times [2020-10-13 08:12:18,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:18,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860661283] [2020-10-13 08:12:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:18,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:19,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:19,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-13 08:12:19,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-10-13 08:12:19,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:19,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-13 08:12:19,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 08:12:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:19,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:12:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:19,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:19,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:19,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:19,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:12:19,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 08:12:19,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:19,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:12:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:12:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:19,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:19,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:12:19,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:19,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-13 08:12:19,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-13 08:12:19,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-13 08:12:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:20,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:20,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:20,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 08:12:20,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:20,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:12:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-13 08:12:20,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860661283] [2020-10-13 08:12:20,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:20,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:12:20,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105780318] [2020-10-13 08:12:20,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:12:20,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:20,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:12:20,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:20,819 INFO L87 Difference]: Start difference. First operand 20949 states and 26351 transitions. Second operand 6 states. [2020-10-13 08:12:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:22,938 INFO L93 Difference]: Finished difference Result 41579 states and 52409 transitions. [2020-10-13 08:12:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:12:22,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 390 [2020-10-13 08:12:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:22,982 INFO L225 Difference]: With dead ends: 41579 [2020-10-13 08:12:22,983 INFO L226 Difference]: Without dead ends: 21000 [2020-10-13 08:12:23,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:12:23,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21000 states. [2020-10-13 08:12:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21000 to 20947. [2020-10-13 08:12:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20947 states. [2020-10-13 08:12:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20947 states to 20947 states and 26274 transitions. [2020-10-13 08:12:23,342 INFO L78 Accepts]: Start accepts. Automaton has 20947 states and 26274 transitions. Word has length 390 [2020-10-13 08:12:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:23,343 INFO L479 AbstractCegarLoop]: Abstraction has 20947 states and 26274 transitions. [2020-10-13 08:12:23,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:12:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 20947 states and 26274 transitions. [2020-10-13 08:12:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-13 08:12:23,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:23,361 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:23,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 08:12:23,362 INFO L427 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:23,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:23,362 INFO L82 PathProgramCache]: Analyzing trace with hash 835615305, now seen corresponding path program 1 times [2020-10-13 08:12:23,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:23,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744075790] [2020-10-13 08:12:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:24,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:12:28,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 08:12:28,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:28,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:28,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:28,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:28,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:28,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:28,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:28,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:28,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:28,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:28,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 08:12:28,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:12:28,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:28,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 08:12:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 08:12:28,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:28,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:12:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:28,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:12:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-13 08:12:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:29,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:29,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 319 proven. 69 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-13 08:12:29,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744075790] [2020-10-13 08:12:29,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:29,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:12:29,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208793132] [2020-10-13 08:12:29,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:12:29,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:29,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:12:29,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:29,241 INFO L87 Difference]: Start difference. First operand 20947 states and 26274 transitions. Second operand 6 states. [2020-10-13 08:12:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:31,642 INFO L93 Difference]: Finished difference Result 41577 states and 52252 transitions. [2020-10-13 08:12:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:12:31,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 414 [2020-10-13 08:12:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:31,690 INFO L225 Difference]: With dead ends: 41577 [2020-10-13 08:12:31,690 INFO L226 Difference]: Without dead ends: 20999 [2020-10-13 08:12:31,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:12:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20999 states. [2020-10-13 08:12:31,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20999 to 20945. [2020-10-13 08:12:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20945 states. [2020-10-13 08:12:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20945 states to 20945 states and 26197 transitions. [2020-10-13 08:12:32,034 INFO L78 Accepts]: Start accepts. Automaton has 20945 states and 26197 transitions. Word has length 414 [2020-10-13 08:12:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:32,035 INFO L479 AbstractCegarLoop]: Abstraction has 20945 states and 26197 transitions. [2020-10-13 08:12:32,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:12:32,036 INFO L276 IsEmpty]: Start isEmpty. Operand 20945 states and 26197 transitions. [2020-10-13 08:12:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-13 08:12:32,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:32,058 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:32,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 08:12:32,059 INFO L427 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1602449222, now seen corresponding path program 1 times [2020-10-13 08:12:32,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:32,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445485802] [2020-10-13 08:12:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:32,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:32,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:36,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:36,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-13 08:12:36,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:12:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4817 [2020-10-13 08:12:36,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-13 08:12:36,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 08:12:36,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:37,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:37,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:12:37,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:37,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:37,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:37,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:12:37,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:12:37,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 08:12:37,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:12:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-13 08:12:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:12:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-13 08:12:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:37,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:37,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:37,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:37,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:12:37,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:12:37,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:37,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 318 proven. 69 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-13 08:12:37,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445485802] [2020-10-13 08:12:37,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:37,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:12:37,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324928626] [2020-10-13 08:12:37,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:12:37,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:37,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:12:37,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:37,780 INFO L87 Difference]: Start difference. First operand 20945 states and 26197 transitions. Second operand 6 states. [2020-10-13 08:12:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:40,115 INFO L93 Difference]: Finished difference Result 41587 states and 52097 transitions. [2020-10-13 08:12:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:12:40,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 414 [2020-10-13 08:12:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:40,171 INFO L225 Difference]: With dead ends: 41587 [2020-10-13 08:12:40,171 INFO L226 Difference]: Without dead ends: 21004 [2020-10-13 08:12:40,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 08:12:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21004 states. [2020-10-13 08:12:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21004 to 20943. [2020-10-13 08:12:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20943 states. [2020-10-13 08:12:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20943 states to 20943 states and 26094 transitions. [2020-10-13 08:12:40,557 INFO L78 Accepts]: Start accepts. Automaton has 20943 states and 26094 transitions. Word has length 414 [2020-10-13 08:12:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:40,557 INFO L479 AbstractCegarLoop]: Abstraction has 20943 states and 26094 transitions. [2020-10-13 08:12:40,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:12:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 20943 states and 26094 transitions. [2020-10-13 08:12:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-13 08:12:40,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:40,571 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:40,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 08:12:40,572 INFO L427 AbstractCegarLoop]: === Iteration 27 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:40,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1274117506, now seen corresponding path program 1 times [2020-10-13 08:12:40,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:40,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63873337] [2020-10-13 08:12:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:41,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-13 08:12:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:12:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-13 08:12:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 378 [2020-10-13 08:12:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:12:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:41,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:12:41,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:41,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:12:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:12:41,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:12:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:12:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:12:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:12:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:41,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:41,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:12:41,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:41,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 08:12:41,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:41,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-13 08:12:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-13 08:12:41,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63873337] [2020-10-13 08:12:41,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:41,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:41,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621878469] [2020-10-13 08:12:41,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:41,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:41,575 INFO L87 Difference]: Start difference. First operand 20943 states and 26094 transitions. Second operand 5 states. [2020-10-13 08:12:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:43,663 INFO L93 Difference]: Finished difference Result 41554 states and 51894 transitions. [2020-10-13 08:12:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:43,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2020-10-13 08:12:43,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:43,712 INFO L225 Difference]: With dead ends: 41554 [2020-10-13 08:12:43,712 INFO L226 Difference]: Without dead ends: 20983 [2020-10-13 08:12:43,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20983 states. [2020-10-13 08:12:43,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20983 to 20941. [2020-10-13 08:12:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20941 states. [2020-10-13 08:12:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20941 states to 20941 states and 26055 transitions. [2020-10-13 08:12:43,975 INFO L78 Accepts]: Start accepts. Automaton has 20941 states and 26055 transitions. Word has length 414 [2020-10-13 08:12:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:43,976 INFO L479 AbstractCegarLoop]: Abstraction has 20941 states and 26055 transitions. [2020-10-13 08:12:43,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 20941 states and 26055 transitions. [2020-10-13 08:12:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-13 08:12:43,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:43,993 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:43,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 08:12:43,993 INFO L427 AbstractCegarLoop]: === Iteration 28 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:43,994 INFO L82 PathProgramCache]: Analyzing trace with hash 960489885, now seen corresponding path program 1 times [2020-10-13 08:12:43,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:43,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024678097] [2020-10-13 08:12:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:44,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:45,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3944 [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 384 [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:12:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:48,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:48,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:48,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:48,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:48,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:48,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:48,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:12:48,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 08:12:48,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:48,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:12:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:48,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 08:12:48,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 08:12:48,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-13 08:12:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2020-10-13 08:12:48,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024678097] [2020-10-13 08:12:48,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:48,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:48,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82106362] [2020-10-13 08:12:48,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:48,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:48,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:48,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:48,380 INFO L87 Difference]: Start difference. First operand 20941 states and 26055 transitions. Second operand 5 states. [2020-10-13 08:12:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:50,995 INFO L93 Difference]: Finished difference Result 43838 states and 55237 transitions. [2020-10-13 08:12:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:50,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 420 [2020-10-13 08:12:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:51,037 INFO L225 Difference]: With dead ends: 43838 [2020-10-13 08:12:51,037 INFO L226 Difference]: Without dead ends: 23281 [2020-10-13 08:12:51,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:12:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23281 states. [2020-10-13 08:12:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23281 to 22459. [2020-10-13 08:12:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22459 states. [2020-10-13 08:12:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22459 states to 22459 states and 28283 transitions. [2020-10-13 08:12:51,356 INFO L78 Accepts]: Start accepts. Automaton has 22459 states and 28283 transitions. Word has length 420 [2020-10-13 08:12:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:51,356 INFO L479 AbstractCegarLoop]: Abstraction has 22459 states and 28283 transitions. [2020-10-13 08:12:51,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 22459 states and 28283 transitions. [2020-10-13 08:12:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-13 08:12:51,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:51,371 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:51,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 08:12:51,371 INFO L427 AbstractCegarLoop]: === Iteration 29 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:51,372 INFO L82 PathProgramCache]: Analyzing trace with hash -286634877, now seen corresponding path program 1 times [2020-10-13 08:12:51,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:51,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002780798] [2020-10-13 08:12:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:51,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:51,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:51,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:52,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:52,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:56,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:56,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-13 08:12:56,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 08:12:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 08:12:56,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-13 08:12:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:12:56,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:12:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:56,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:12:56,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:12:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:12:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:12:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:56,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:12:56,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 08:12:56,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:12:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-13 08:12:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:12:56,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:12:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:56,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:56,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 08:12:56,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:12:56,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 08:12:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:56,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-13 08:12:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:56,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:56,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:12:56,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:12:56,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-13 08:12:56,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:56,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:56,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-10-13 08:12:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:12:56,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:12:56,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:12:56,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:12:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:12:56,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:12:56,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:12:56,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:12:56,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:12:56,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:12:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 172 proven. 6 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-13 08:12:56,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002780798] [2020-10-13 08:12:56,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:12:56,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:12:56,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472748941] [2020-10-13 08:12:56,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:12:56,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:12:56,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:12:56,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:12:56,835 INFO L87 Difference]: Start difference. First operand 22459 states and 28283 transitions. Second operand 5 states. [2020-10-13 08:12:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:12:59,283 INFO L93 Difference]: Finished difference Result 40663 states and 51125 transitions. [2020-10-13 08:12:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:12:59,284 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 425 [2020-10-13 08:12:59,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:12:59,312 INFO L225 Difference]: With dead ends: 40663 [2020-10-13 08:12:59,313 INFO L226 Difference]: Without dead ends: 17626 [2020-10-13 08:12:59,338 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 08:12:59,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17626 states. [2020-10-13 08:12:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17626 to 16267. [2020-10-13 08:12:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16267 states. [2020-10-13 08:12:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16267 states to 16267 states and 18988 transitions. [2020-10-13 08:12:59,549 INFO L78 Accepts]: Start accepts. Automaton has 16267 states and 18988 transitions. Word has length 425 [2020-10-13 08:12:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:12:59,549 INFO L479 AbstractCegarLoop]: Abstraction has 16267 states and 18988 transitions. [2020-10-13 08:12:59,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:12:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16267 states and 18988 transitions. [2020-10-13 08:12:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-13 08:12:59,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:12:59,680 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:12:59,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 08:12:59,681 INFO L427 AbstractCegarLoop]: === Iteration 30 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:12:59,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:12:59,681 INFO L82 PathProgramCache]: Analyzing trace with hash -910811148, now seen corresponding path program 1 times [2020-10-13 08:12:59,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:12:59,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768079273] [2020-10-13 08:12:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:12:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:12:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:00,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-13 08:13:01,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:01,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1993 [2020-10-13 08:13:01,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-13 08:13:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:01,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:01,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:01,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:01,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:01,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:01,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:01,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:13:01,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:01,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:01,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:01,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:01,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:02,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 08:13:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:02,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-13 08:13:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:02,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:02,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:02,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:02,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 08:13:02,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-13 08:13:02,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768079273] [2020-10-13 08:13:02,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:02,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:02,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741950535] [2020-10-13 08:13:02,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:02,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:02,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:02,331 INFO L87 Difference]: Start difference. First operand 16267 states and 18988 transitions. Second operand 7 states. [2020-10-13 08:13:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:05,489 INFO L93 Difference]: Finished difference Result 32947 states and 38512 transitions. [2020-10-13 08:13:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:13:05,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-13 08:13:05,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:05,516 INFO L225 Difference]: With dead ends: 32947 [2020-10-13 08:13:05,516 INFO L226 Difference]: Without dead ends: 16874 [2020-10-13 08:13:05,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:13:05,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16874 states. [2020-10-13 08:13:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16874 to 16647. [2020-10-13 08:13:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16647 states. [2020-10-13 08:13:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16647 states to 16647 states and 19340 transitions. [2020-10-13 08:13:05,731 INFO L78 Accepts]: Start accepts. Automaton has 16647 states and 19340 transitions. Word has length 435 [2020-10-13 08:13:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:05,732 INFO L479 AbstractCegarLoop]: Abstraction has 16647 states and 19340 transitions. [2020-10-13 08:13:05,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 16647 states and 19340 transitions. [2020-10-13 08:13:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-13 08:13:05,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:05,741 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:05,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 08:13:05,742 INFO L427 AbstractCegarLoop]: === Iteration 31 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:05,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:05,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2138861394, now seen corresponding path program 1 times [2020-10-13 08:13:05,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:05,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996878945] [2020-10-13 08:13:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:05,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:09,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:09,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-13 08:13:09,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3906 [2020-10-13 08:13:09,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:09,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:09,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-13 08:13:09,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:13:09,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:09,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:09,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:09,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:09,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:09,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:09,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:09,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:13:09,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:09,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:09,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:09,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:09,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:13:09,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:13:09,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:09,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:09,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:09,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-13 08:13:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:10,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:13:10,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:10,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-13 08:13:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:10,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:10,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:10,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 08:13:10,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:13:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 319 proven. 69 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2020-10-13 08:13:10,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996878945] [2020-10-13 08:13:10,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:10,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:10,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684327619] [2020-10-13 08:13:10,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:10,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:10,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:10,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:10,393 INFO L87 Difference]: Start difference. First operand 16647 states and 19340 transitions. Second operand 7 states. [2020-10-13 08:13:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:13,372 INFO L93 Difference]: Finished difference Result 33139 states and 38593 transitions. [2020-10-13 08:13:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 08:13:13,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-10-13 08:13:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:13,395 INFO L225 Difference]: With dead ends: 33139 [2020-10-13 08:13:13,395 INFO L226 Difference]: Without dead ends: 16876 [2020-10-13 08:13:13,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:13:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16876 states. [2020-10-13 08:13:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16876 to 16835. [2020-10-13 08:13:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16835 states. [2020-10-13 08:13:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16835 states to 16835 states and 19542 transitions. [2020-10-13 08:13:13,589 INFO L78 Accepts]: Start accepts. Automaton has 16835 states and 19542 transitions. Word has length 447 [2020-10-13 08:13:13,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:13,589 INFO L479 AbstractCegarLoop]: Abstraction has 16835 states and 19542 transitions. [2020-10-13 08:13:13,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:13,589 INFO L276 IsEmpty]: Start isEmpty. Operand 16835 states and 19542 transitions. [2020-10-13 08:13:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2020-10-13 08:13:13,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:13,598 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-13 08:13:13,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 08:13:13,599 INFO L427 AbstractCegarLoop]: === Iteration 32 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:13,599 INFO L82 PathProgramCache]: Analyzing trace with hash -23750235, now seen corresponding path program 1 times [2020-10-13 08:13:13,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:13,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208676240] [2020-10-13 08:13:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-10-13 08:13:14,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-13 08:13:14,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 318 [2020-10-13 08:13:14,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:14,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 08:13:14,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:13:14,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:14,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:14,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 08:13:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 08:13:14,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 08:13:14,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-13 08:13:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 08:13:14,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:14,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-10-13 08:13:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:14,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:14,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:14,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 08:13:14,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:14,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 445 proven. 2 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 08:13:15,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208676240] [2020-10-13 08:13:15,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:15,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:15,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879511926] [2020-10-13 08:13:15,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:15,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:15,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:15,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:15,082 INFO L87 Difference]: Start difference. First operand 16835 states and 19542 transitions. Second operand 7 states. [2020-10-13 08:13:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:17,831 INFO L93 Difference]: Finished difference Result 34856 states and 40406 transitions. [2020-10-13 08:13:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:13:17,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 448 [2020-10-13 08:13:17,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:17,861 INFO L225 Difference]: With dead ends: 34856 [2020-10-13 08:13:17,861 INFO L226 Difference]: Without dead ends: 18209 [2020-10-13 08:13:17,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 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 08:13:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18209 states. [2020-10-13 08:13:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18209 to 17789. [2020-10-13 08:13:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17789 states. [2020-10-13 08:13:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17789 states to 17789 states and 20485 transitions. [2020-10-13 08:13:18,075 INFO L78 Accepts]: Start accepts. Automaton has 17789 states and 20485 transitions. Word has length 448 [2020-10-13 08:13:18,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:18,075 INFO L479 AbstractCegarLoop]: Abstraction has 17789 states and 20485 transitions. [2020-10-13 08:13:18,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 17789 states and 20485 transitions. [2020-10-13 08:13:18,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-13 08:13:18,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:18,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:18,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 08:13:18,085 INFO L427 AbstractCegarLoop]: === Iteration 33 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:18,085 INFO L82 PathProgramCache]: Analyzing trace with hash 803160645, now seen corresponding path program 1 times [2020-10-13 08:13:18,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:18,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562734350] [2020-10-13 08:13:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-13 08:13:22,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3986 [2020-10-13 08:13:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 421 [2020-10-13 08:13:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 08:13:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:22,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:22,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:13:22,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:22,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:22,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:13:22,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 08:13:22,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:22,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 08:13:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:22,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:22,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:13:22,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:22,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:13:22,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 08:13:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 132 proven. 3 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-13 08:13:22,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562734350] [2020-10-13 08:13:22,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:22,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:13:22,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827914905] [2020-10-13 08:13:22,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:13:22,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:22,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:13:22,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:13:22,567 INFO L87 Difference]: Start difference. First operand 17789 states and 20485 transitions. Second operand 5 states. [2020-10-13 08:13:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:25,091 INFO L93 Difference]: Finished difference Result 18965 states and 21816 transitions. [2020-10-13 08:13:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:13:25,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 457 [2020-10-13 08:13:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:25,122 INFO L225 Difference]: With dead ends: 18965 [2020-10-13 08:13:25,122 INFO L226 Difference]: Without dead ends: 18963 [2020-10-13 08:13:25,127 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 08:13:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18963 states. [2020-10-13 08:13:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18963 to 17979. [2020-10-13 08:13:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17979 states. [2020-10-13 08:13:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17979 states to 17979 states and 20717 transitions. [2020-10-13 08:13:25,330 INFO L78 Accepts]: Start accepts. Automaton has 17979 states and 20717 transitions. Word has length 457 [2020-10-13 08:13:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:25,331 INFO L479 AbstractCegarLoop]: Abstraction has 17979 states and 20717 transitions. [2020-10-13 08:13:25,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:13:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 17979 states and 20717 transitions. [2020-10-13 08:13:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-13 08:13:25,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:25,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:25,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 08:13:25,341 INFO L427 AbstractCegarLoop]: === Iteration 34 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:25,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1925228671, now seen corresponding path program 1 times [2020-10-13 08:13:25,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:25,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394844500] [2020-10-13 08:13:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:28,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:28,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-13 08:13:28,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:13:28,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2714 [2020-10-13 08:13:28,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:28,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:13:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-13 08:13:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 08:13:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:28,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:28,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:28,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 08:13:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:13:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:28,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 08:13:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:28,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:28,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:13:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 08:13:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-13 08:13:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-13 08:13:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:28,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-13 08:13:29,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394844500] [2020-10-13 08:13:29,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:29,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:13:29,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078757108] [2020-10-13 08:13:29,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 08:13:29,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:29,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 08:13:29,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 08:13:29,422 INFO L87 Difference]: Start difference. First operand 17979 states and 20717 transitions. Second operand 10 states. [2020-10-13 08:13:29,670 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-13 08:13:29,928 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-13 08:13:30,158 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-13 08:13:30,316 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-13 08:13:32,903 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2020-10-13 08:13:33,472 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-13 08:13:33,863 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 56 [2020-10-13 08:13:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:34,648 INFO L93 Difference]: Finished difference Result 35803 states and 41299 transitions. [2020-10-13 08:13:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 08:13:34,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 457 [2020-10-13 08:13:34,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:34,679 INFO L225 Difference]: With dead ends: 35803 [2020-10-13 08:13:34,679 INFO L226 Difference]: Without dead ends: 18154 [2020-10-13 08:13:34,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-13 08:13:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2020-10-13 08:13:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 17783. [2020-10-13 08:13:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17783 states. [2020-10-13 08:13:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 20463 transitions. [2020-10-13 08:13:34,891 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 20463 transitions. Word has length 457 [2020-10-13 08:13:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:34,891 INFO L479 AbstractCegarLoop]: Abstraction has 17783 states and 20463 transitions. [2020-10-13 08:13:34,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 08:13:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 20463 transitions. [2020-10-13 08:13:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-13 08:13:34,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:34,901 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:34,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 08:13:34,901 INFO L427 AbstractCegarLoop]: === Iteration 35 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash -248251389, now seen corresponding path program 1 times [2020-10-13 08:13:34,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:34,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393259147] [2020-10-13 08:13:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:35,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:38,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:39,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:39,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-13 08:13:39,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:13:39,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 08:13:39,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:39,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 251 [2020-10-13 08:13:39,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 08:13:39,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:40,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:40,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:40,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:40,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 08:13:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:13:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 08:13:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-13 08:13:40,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 08:13:40,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:40,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 08:13:40,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-13 08:13:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 08:13:40,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 08:13:40,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:13:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-13 08:13:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:40,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:40,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:40,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:40,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:13:40,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 08:13:40,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 353 proven. 86 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-13 08:13:40,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393259147] [2020-10-13 08:13:40,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:40,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:40,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562686766] [2020-10-13 08:13:40,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:40,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:40,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:40,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:40,474 INFO L87 Difference]: Start difference. First operand 17783 states and 20463 transitions. Second operand 7 states. [2020-10-13 08:13:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:43,841 INFO L93 Difference]: Finished difference Result 36504 states and 42292 transitions. [2020-10-13 08:13:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:13:43,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-13 08:13:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:43,871 INFO L225 Difference]: With dead ends: 36504 [2020-10-13 08:13:43,872 INFO L226 Difference]: Without dead ends: 17943 [2020-10-13 08:13:43,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:13:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17943 states. [2020-10-13 08:13:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17943 to 17777. [2020-10-13 08:13:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17777 states. [2020-10-13 08:13:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17777 states to 17777 states and 20388 transitions. [2020-10-13 08:13:44,115 INFO L78 Accepts]: Start accepts. Automaton has 17777 states and 20388 transitions. Word has length 470 [2020-10-13 08:13:44,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:44,116 INFO L479 AbstractCegarLoop]: Abstraction has 17777 states and 20388 transitions. [2020-10-13 08:13:44,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 17777 states and 20388 transitions. [2020-10-13 08:13:44,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-13 08:13:44,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:44,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:44,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 08:13:44,125 INFO L427 AbstractCegarLoop]: === Iteration 36 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:44,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1623580180, now seen corresponding path program 1 times [2020-10-13 08:13:44,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:44,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531900039] [2020-10-13 08:13:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:44,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:44,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-13 08:13:44,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-13 08:13:44,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-13 08:13:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:13:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:44,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:44,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:44,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:44,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:44,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:44,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:44,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:44,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:13:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 08:13:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:13:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:13:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:13:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:44,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:44,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 08:13:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 08:13:44,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-13 08:13:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-13 08:13:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:45,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:45,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:45,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:45,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 08:13:45,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:45,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:45,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 316 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-13 08:13:45,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531900039] [2020-10-13 08:13:45,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:45,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:13:45,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958280163] [2020-10-13 08:13:45,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:13:45,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:45,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:13:45,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:13:45,502 INFO L87 Difference]: Start difference. First operand 17777 states and 20388 transitions. Second operand 7 states. [2020-10-13 08:13:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:48,887 INFO L93 Difference]: Finished difference Result 35597 states and 40812 transitions. [2020-10-13 08:13:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 08:13:48,888 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 470 [2020-10-13 08:13:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:48,915 INFO L225 Difference]: With dead ends: 35597 [2020-10-13 08:13:48,915 INFO L226 Difference]: Without dead ends: 18204 [2020-10-13 08:13:48,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:13:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2020-10-13 08:13:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 17589. [2020-10-13 08:13:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17589 states. [2020-10-13 08:13:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17589 states to 17589 states and 20164 transitions. [2020-10-13 08:13:49,132 INFO L78 Accepts]: Start accepts. Automaton has 17589 states and 20164 transitions. Word has length 470 [2020-10-13 08:13:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:49,133 INFO L479 AbstractCegarLoop]: Abstraction has 17589 states and 20164 transitions. [2020-10-13 08:13:49,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:13:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 17589 states and 20164 transitions. [2020-10-13 08:13:49,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-13 08:13:49,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:49,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:13:49,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 08:13:49,143 INFO L427 AbstractCegarLoop]: === Iteration 37 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1878527995, now seen corresponding path program 1 times [2020-10-13 08:13:49,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:49,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417592796] [2020-10-13 08:13:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:50,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 444 [2020-10-13 08:13:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:13:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:51,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:13:51,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:13:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:13:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:13:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:13:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:51,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:13:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:51,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:51,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 08:13:51,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 08:13:51,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:13:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 08:13:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:51,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 08:13:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-13 08:13:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:51,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2020-10-13 08:13:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:13:51,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:13:51,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:13:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 08:13:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:13:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 08:13:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:13:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 08:13:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:13:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 304 proven. 14 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-10-13 08:13:52,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417592796] [2020-10-13 08:13:52,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:13:52,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 08:13:52,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337297650] [2020-10-13 08:13:52,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 08:13:52,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:13:52,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 08:13:52,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-13 08:13:52,234 INFO L87 Difference]: Start difference. First operand 17589 states and 20164 transitions. Second operand 11 states. [2020-10-13 08:13:57,970 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-10-13 08:13:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:13:59,121 INFO L93 Difference]: Finished difference Result 45148 states and 51720 transitions. [2020-10-13 08:13:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 08:13:59,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 474 [2020-10-13 08:13:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:13:59,175 INFO L225 Difference]: With dead ends: 45148 [2020-10-13 08:13:59,175 INFO L226 Difference]: Without dead ends: 27741 [2020-10-13 08:13:59,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-10-13 08:13:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27741 states. [2020-10-13 08:13:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27741 to 26449. [2020-10-13 08:13:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26449 states. [2020-10-13 08:13:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26449 states to 26449 states and 29995 transitions. [2020-10-13 08:13:59,525 INFO L78 Accepts]: Start accepts. Automaton has 26449 states and 29995 transitions. Word has length 474 [2020-10-13 08:13:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:13:59,526 INFO L479 AbstractCegarLoop]: Abstraction has 26449 states and 29995 transitions. [2020-10-13 08:13:59,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 08:13:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 26449 states and 29995 transitions. [2020-10-13 08:13:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-13 08:13:59,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:13:59,538 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-13 08:13:59,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 08:13:59,539 INFO L427 AbstractCegarLoop]: === Iteration 38 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:13:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:13:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1639342102, now seen corresponding path program 1 times [2020-10-13 08:13:59,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:13:59,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287222185] [2020-10-13 08:13:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:13:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:13:59,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:13:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking...