/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 SingleStatement --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:47,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:47,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:47,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:47,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:47,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:47,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:47,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:47,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:47,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:47,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:47,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:47,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:47,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:47,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:47,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:47,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:47,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:47,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:47,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:47,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:47,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:47,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:47,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:47,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:47,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:47,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:47,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:47,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:47,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:47,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:47,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:47,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:47,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:47,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:47,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:47,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:47,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:47,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:47,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:47,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:47,715 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 [2020-09-24 19:30:47,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:47,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:47,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:47,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:47,765 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:47,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:47,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:47,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:47,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:47,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:47,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:47,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:47,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:47,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:47,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:47,769 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:47,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:47,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:47,770 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:47,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:47,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:47,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:47,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:47,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:47,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:47,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:47,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:47,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:47,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:47,772 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 -> SingleStatement 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:48,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:48,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:48,251 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:48,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:48,255 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:48,256 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-24 19:30:48,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d22f65e6/01609119e6744cfd85acaa193029aa57/FLAGcacabeec1 [2020-09-24 19:30:49,084 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:49,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-24 19:30:49,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d22f65e6/01609119e6744cfd85acaa193029aa57/FLAGcacabeec1 [2020-09-24 19:30:49,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d22f65e6/01609119e6744cfd85acaa193029aa57 [2020-09-24 19:30:49,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:49,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:49,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:49,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:49,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:49,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:49" (1/1) ... [2020-09-24 19:30:49,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23bccf0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:49, skipping insertion in model container [2020-09-24 19:30:49,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:49" (1/1) ... [2020-09-24 19:30:49,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:49,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:50,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:50,119 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:50,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:50,264 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:50,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50 WrapperNode [2020-09-24 19:30:50,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:50,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:50,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:50,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:50,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (1/1) ... [2020-09-24 19:30:50,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (1/1) ... [2020-09-24 19:30:50,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (1/1) ... [2020-09-24 19:30:50,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (1/1) ... [2020-09-24 19:30:50,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (1/1) ... [2020-09-24 19:30:50,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (1/1) ... [2020-09-24 19:30:50,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (1/1) ... [2020-09-24 19:30:50,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:50,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:50,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:50,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:50,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (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 [2020-09-24 19:30:50,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:50,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:50,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:50,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:52,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:52,334 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:52,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:52 BoogieIcfgContainer [2020-09-24 19:30:52,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:52,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:52,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:52,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:52,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:49" (1/3) ... [2020-09-24 19:30:52,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1793de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:52, skipping insertion in model container [2020-09-24 19:30:52,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:50" (2/3) ... [2020-09-24 19:30:52,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e1793de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:52, skipping insertion in model container [2020-09-24 19:30:52,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:52" (3/3) ... [2020-09-24 19:30:52,365 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-24 19:30:52,378 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:52,397 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:52,423 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:52,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:52,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:52,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:52,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:52,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:52,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:52,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:52,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 19:30:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 19:30:52,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:52,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:52,550 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:52,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:52,559 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-24 19:30:52,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:52,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300997401] [2020-09-24 19:30:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:53,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:30:53,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:53,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-09-24 19:30:53,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:30:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:30:53,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:30:53,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:53,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:53,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:53,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:53,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:30:53,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:53,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:30:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:53,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300997401] [2020-09-24 19:30:53,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:53,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:30:53,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529636034] [2020-09-24 19:30:53,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:30:53,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:53,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:30:53,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:30:53,748 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-24 19:30:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:56,944 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-24 19:30:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:30:56,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-24 19:30:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:56,995 INFO L225 Difference]: With dead ends: 1656 [2020-09-24 19:30:56,995 INFO L226 Difference]: Without dead ends: 920 [2020-09-24 19:30:57,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-24 19:30:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-24 19:30:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 19:30:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-24 19:30:57,132 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 67 [2020-09-24 19:30:57,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:57,133 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-24 19:30:57,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:30:57,134 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-24 19:30:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 19:30:57,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:57,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:57,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:57,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:57,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:57,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1033084141, now seen corresponding path program 1 times [2020-09-24 19:30:57,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:57,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323381496] [2020-09-24 19:30:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:57,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:57,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 19:30:58,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-24 19:30:58,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:58,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-24 19:30:58,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 19:30:58,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:58,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:58,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:58,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:58,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 19:30:58,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 19:30:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:58,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323381496] [2020-09-24 19:30:58,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:58,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:58,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509110134] [2020-09-24 19:30:58,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:58,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:58,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:58,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:58,556 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-24 19:31:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:01,468 INFO L93 Difference]: Finished difference Result 2007 states and 2507 transitions. [2020-09-24 19:31:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:01,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-24 19:31:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:01,480 INFO L225 Difference]: With dead ends: 2007 [2020-09-24 19:31:01,481 INFO L226 Difference]: Without dead ends: 1021 [2020-09-24 19:31:01,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:31:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-09-24 19:31:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 993. [2020-09-24 19:31:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-24 19:31:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1165 transitions. [2020-09-24 19:31:01,546 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1165 transitions. Word has length 146 [2020-09-24 19:31:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:01,549 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1165 transitions. [2020-09-24 19:31:01,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:01,549 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1165 transitions. [2020-09-24 19:31:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 19:31:01,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:01,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:01,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:31:01,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:01,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:01,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1318584110, now seen corresponding path program 1 times [2020-09-24 19:31:01,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:01,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285759207] [2020-09-24 19:31:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 19:31:02,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:02,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:31:02,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:02,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 19:31:02,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 19:31:02,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:02,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:02,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:31:02,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:31:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 19:31:02,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:02,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:31:02,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:02,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:31:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:31:02,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285759207] [2020-09-24 19:31:02,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:02,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:02,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665116562] [2020-09-24 19:31:02,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:02,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:02,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:02,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:02,963 INFO L87 Difference]: Start difference. First operand 993 states and 1165 transitions. Second operand 5 states. [2020-09-24 19:31:05,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:05,768 INFO L93 Difference]: Finished difference Result 2393 states and 2919 transitions. [2020-09-24 19:31:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:05,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 19:31:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:05,778 INFO L225 Difference]: With dead ends: 2393 [2020-09-24 19:31:05,778 INFO L226 Difference]: Without dead ends: 1415 [2020-09-24 19:31:05,781 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 [2020-09-24 19:31:05,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2020-09-24 19:31:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1375. [2020-09-24 19:31:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-09-24 19:31:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1641 transitions. [2020-09-24 19:31:05,824 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1641 transitions. Word has length 154 [2020-09-24 19:31:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:05,825 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 1641 transitions. [2020-09-24 19:31:05,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1641 transitions. [2020-09-24 19:31:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 19:31:05,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:05,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:31:05,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:31:05,828 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:05,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:05,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1796582358, now seen corresponding path program 1 times [2020-09-24 19:31:05,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:05,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452093886] [2020-09-24 19:31:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:31:06,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:06,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-24 19:31:06,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:31:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:31:06,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 19:31:06,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:06,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:06,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:31:06,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:31:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:07,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:31:07,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:07,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-24 19:31:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 19:31:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:31:07,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452093886] [2020-09-24 19:31:07,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:31:07,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:31:07,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352983919] [2020-09-24 19:31:07,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:07,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:07,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:07,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:07,315 INFO L87 Difference]: Start difference. First operand 1375 states and 1641 transitions. Second operand 7 states. [2020-09-24 19:31:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:10,362 INFO L93 Difference]: Finished difference Result 3583 states and 4398 transitions. [2020-09-24 19:31:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:10,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-24 19:31:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:10,375 INFO L225 Difference]: With dead ends: 3583 [2020-09-24 19:31:10,375 INFO L226 Difference]: Without dead ends: 2223 [2020-09-24 19:31:10,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-24 19:31:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2007. [2020-09-24 19:31:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2007 states. [2020-09-24 19:31:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2376 transitions. [2020-09-24 19:31:10,440 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2376 transitions. Word has length 163 [2020-09-24 19:31:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:10,441 INFO L479 AbstractCegarLoop]: Abstraction has 2007 states and 2376 transitions. [2020-09-24 19:31:10,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2376 transitions. [2020-09-24 19:31:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-24 19:31:10,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:10,448 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:10,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:31:10,448 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:10,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1124649340, now seen corresponding path program 1 times [2020-09-24 19:31:10,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:10,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544598513] [2020-09-24 19:31:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:10,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:10,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-24 19:31:11,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-09-24 19:31:11,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 19:31:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 19:31:11,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:11,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:11,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:11,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:31:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:31:11,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 19:31:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:31:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:11,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:11,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:11,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 19:31:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:11,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:31:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:12,264 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:12,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544598513] [2020-09-24 19:31:12,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:12,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:12,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106040649] [2020-09-24 19:31:12,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:12,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:12,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:12,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:12,267 INFO L87 Difference]: Start difference. First operand 2007 states and 2376 transitions. Second operand 7 states. [2020-09-24 19:31:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:15,789 INFO L93 Difference]: Finished difference Result 4020 states and 4909 transitions. [2020-09-24 19:31:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:15,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-24 19:31:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:15,803 INFO L225 Difference]: With dead ends: 4020 [2020-09-24 19:31:15,803 INFO L226 Difference]: Without dead ends: 2315 [2020-09-24 19:31:15,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:15,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-09-24 19:31:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2305. [2020-09-24 19:31:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-09-24 19:31:15,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 2595 transitions. [2020-09-24 19:31:15,871 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 2595 transitions. Word has length 240 [2020-09-24 19:31:15,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:15,871 INFO L479 AbstractCegarLoop]: Abstraction has 2305 states and 2595 transitions. [2020-09-24 19:31:15,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:15,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 2595 transitions. [2020-09-24 19:31:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-24 19:31:15,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:15,876 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:15,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:31:15,877 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:15,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:15,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1365263247, now seen corresponding path program 1 times [2020-09-24 19:31:15,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:15,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986997540] [2020-09-24 19:31:15,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:16,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:16,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-09-24 19:31:16,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:31:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:31:16,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:31:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 19:31:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:31:16,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:17,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:17,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:17,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:17,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 19:31:17,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 19:31:17,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:31:17,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:31:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:17,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 19:31:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:17,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:17,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:17,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:17,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 19:31:17,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:31:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:17,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986997540] [2020-09-24 19:31:17,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:17,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:31:17,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499877946] [2020-09-24 19:31:17,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:31:17,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:17,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:31:17,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:31:17,588 INFO L87 Difference]: Start difference. First operand 2305 states and 2595 transitions. Second operand 8 states. [2020-09-24 19:31:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:22,197 INFO L93 Difference]: Finished difference Result 4951 states and 5751 transitions. [2020-09-24 19:31:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 19:31:22,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-09-24 19:31:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:22,213 INFO L225 Difference]: With dead ends: 4951 [2020-09-24 19:31:22,213 INFO L226 Difference]: Without dead ends: 2782 [2020-09-24 19:31:22,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-09-24 19:31:22,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2020-09-24 19:31:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2696. [2020-09-24 19:31:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2696 states. [2020-09-24 19:31:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 2956 transitions. [2020-09-24 19:31:22,299 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 2956 transitions. Word has length 249 [2020-09-24 19:31:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:22,299 INFO L479 AbstractCegarLoop]: Abstraction has 2696 states and 2956 transitions. [2020-09-24 19:31:22,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:31:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 2956 transitions. [2020-09-24 19:31:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-09-24 19:31:22,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:22,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:22,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:31:22,305 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:22,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:22,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1798886375, now seen corresponding path program 1 times [2020-09-24 19:31:22,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:22,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752806515] [2020-09-24 19:31:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:23,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-09-24 19:31:23,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:23,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:31:23,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 165 [2020-09-24 19:31:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 19:31:23,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:23,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:23,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:23,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:23,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:23,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 19:31:23,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:23,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 19:31:23,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:23,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 19:31:23,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:23,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 19:31:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:23,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:31:23,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-24 19:31:23,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:31:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:24,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752806515] [2020-09-24 19:31:24,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:24,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:24,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292060368] [2020-09-24 19:31:24,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:24,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:24,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:24,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:24,048 INFO L87 Difference]: Start difference. First operand 2696 states and 2956 transitions. Second operand 7 states. [2020-09-24 19:31:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:26,161 INFO L93 Difference]: Finished difference Result 5616 states and 6363 transitions. [2020-09-24 19:31:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:26,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-09-24 19:31:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:26,178 INFO L225 Difference]: With dead ends: 5616 [2020-09-24 19:31:26,178 INFO L226 Difference]: Without dead ends: 3510 [2020-09-24 19:31:26,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2020-09-24 19:31:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 3487. [2020-09-24 19:31:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3487 states. [2020-09-24 19:31:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3487 states to 3487 states and 3855 transitions. [2020-09-24 19:31:26,268 INFO L78 Accepts]: Start accepts. Automaton has 3487 states and 3855 transitions. Word has length 300 [2020-09-24 19:31:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:26,268 INFO L479 AbstractCegarLoop]: Abstraction has 3487 states and 3855 transitions. [2020-09-24 19:31:26,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3487 states and 3855 transitions. [2020-09-24 19:31:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-24 19:31:26,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:26,276 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:26,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:31:26,276 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1691491011, now seen corresponding path program 1 times [2020-09-24 19:31:26,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:26,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720090186] [2020-09-24 19:31:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:27,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-09-24 19:31:27,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-09-24 19:31:27,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 280 [2020-09-24 19:31:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 19:31:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:27,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:27,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:27,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:27,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:27,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:27,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:27,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:27,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:27,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:27,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:31:27,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:27,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:27,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:27,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 19:31:27,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:27,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:31:27,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:31:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-09-24 19:31:27,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720090186] [2020-09-24 19:31:27,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:27,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:27,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382167097] [2020-09-24 19:31:27,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:27,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:27,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:27,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:27,959 INFO L87 Difference]: Start difference. First operand 3487 states and 3855 transitions. Second operand 5 states. [2020-09-24 19:31:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:29,675 INFO L93 Difference]: Finished difference Result 7998 states and 9045 transitions. [2020-09-24 19:31:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:29,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-09-24 19:31:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:29,698 INFO L225 Difference]: With dead ends: 7998 [2020-09-24 19:31:29,699 INFO L226 Difference]: Without dead ends: 4715 [2020-09-24 19:31:29,709 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 [2020-09-24 19:31:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2020-09-24 19:31:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 4466. [2020-09-24 19:31:29,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4466 states. [2020-09-24 19:31:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 5023 transitions. [2020-09-24 19:31:29,804 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 5023 transitions. Word has length 328 [2020-09-24 19:31:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:29,805 INFO L479 AbstractCegarLoop]: Abstraction has 4466 states and 5023 transitions. [2020-09-24 19:31:29,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 5023 transitions. [2020-09-24 19:31:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-24 19:31:29,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:29,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:29,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:31:29,812 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2056037705, now seen corresponding path program 1 times [2020-09-24 19:31:29,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:29,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93366654] [2020-09-24 19:31:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:29,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-09-24 19:31:30,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:31:30,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:30,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-09-24 19:31:30,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-24 19:31:30,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:30,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:31,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:31,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:31,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 19:31:31,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 19:31:31,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 19:31:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-09-24 19:31:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:31,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:31,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-24 19:31:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 19:31:31,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:31,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:31,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 19:31:31,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:31,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93366654] [2020-09-24 19:31:31,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:31,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:31,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763355223] [2020-09-24 19:31:31,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:31,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:31,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:31,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:31,638 INFO L87 Difference]: Start difference. First operand 4466 states and 5023 transitions. Second operand 7 states. [2020-09-24 19:31:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:33,656 INFO L93 Difference]: Finished difference Result 9369 states and 10791 transitions. [2020-09-24 19:31:33,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:33,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-09-24 19:31:33,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:33,684 INFO L225 Difference]: With dead ends: 9369 [2020-09-24 19:31:33,684 INFO L226 Difference]: Without dead ends: 5304 [2020-09-24 19:31:33,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2020-09-24 19:31:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 5252. [2020-09-24 19:31:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2020-09-24 19:31:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 6042 transitions. [2020-09-24 19:31:33,839 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 6042 transitions. Word has length 337 [2020-09-24 19:31:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:33,841 INFO L479 AbstractCegarLoop]: Abstraction has 5252 states and 6042 transitions. [2020-09-24 19:31:33,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 6042 transitions. [2020-09-24 19:31:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-09-24 19:31:33,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:33,863 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:33,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:31:33,863 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:33,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:33,864 INFO L82 PathProgramCache]: Analyzing trace with hash -856814800, now seen corresponding path program 1 times [2020-09-24 19:31:33,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:33,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931694374] [2020-09-24 19:31:33,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:34,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:34,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-09-24 19:31:34,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:34,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:31:34,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:34,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 19:31:34,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:35,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:35,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:35,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:31:35,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:35,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:35,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:35,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:35,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 19:31:35,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:35,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:35,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:35,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:35,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:35,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:35,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 19:31:35,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:35,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 19:31:35,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:35,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:31:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:35,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:31:35,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:31:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-24 19:31:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 276 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-24 19:31:36,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931694374] [2020-09-24 19:31:36,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:36,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:36,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080224117] [2020-09-24 19:31:36,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:36,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:36,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:36,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:36,096 INFO L87 Difference]: Start difference. First operand 5252 states and 6042 transitions. Second operand 7 states. [2020-09-24 19:31:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:38,138 INFO L93 Difference]: Finished difference Result 10283 states and 12082 transitions. [2020-09-24 19:31:38,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:38,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-09-24 19:31:38,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:38,165 INFO L225 Difference]: With dead ends: 10283 [2020-09-24 19:31:38,165 INFO L226 Difference]: Without dead ends: 5502 [2020-09-24 19:31:38,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5502 states. [2020-09-24 19:31:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5502 to 5252. [2020-09-24 19:31:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2020-09-24 19:31:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 6032 transitions. [2020-09-24 19:31:38,289 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 6032 transitions. Word has length 412 [2020-09-24 19:31:38,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:38,290 INFO L479 AbstractCegarLoop]: Abstraction has 5252 states and 6032 transitions. [2020-09-24 19:31:38,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:38,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 6032 transitions. [2020-09-24 19:31:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-09-24 19:31:38,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:38,303 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:38,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:31:38,303 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:38,304 INFO L82 PathProgramCache]: Analyzing trace with hash -220813041, now seen corresponding path program 1 times [2020-09-24 19:31:38,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:38,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88764234] [2020-09-24 19:31:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking...