/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:45,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:45,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:45,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:45,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:45,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:45,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:45,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:45,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:45,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:45,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:45,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:45,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:45,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:45,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:45,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:45,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:45,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:45,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:45,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:45,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:45,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:45,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:45,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:45,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:45,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:45,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:45,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:45,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:45,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:45,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:45,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:45,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:45,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:45,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:45,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:45,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:45,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:45,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:45,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:45,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:45,772 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 21:45:45,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:45,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:45,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:45,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:45,821 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:45,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:45,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:45,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:45,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:45,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:45,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:45,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:45,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:45,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:45,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:45,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:45,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:45,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:45,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:45,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:45,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:45,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:45,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:45,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:45,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:45,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:45,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:45,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:45,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:45,827 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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;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=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:45:46,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:46,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:46,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:46,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:46,320 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:46,321 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-24 21:45:46,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e590de74/806959b5fb8a423e9e6d0be8eb207617/FLAGf6641f1d0 [2020-09-24 21:45:47,065 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:47,066 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-24 21:45:47,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e590de74/806959b5fb8a423e9e6d0be8eb207617/FLAGf6641f1d0 [2020-09-24 21:45:47,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e590de74/806959b5fb8a423e9e6d0be8eb207617 [2020-09-24 21:45:47,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:47,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:47,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:47,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:47,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:47,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:47" (1/1) ... [2020-09-24 21:45:47,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:47, skipping insertion in model container [2020-09-24 21:45:47,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:47" (1/1) ... [2020-09-24 21:45:47,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:47,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:47,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:47,852 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:48,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:48,150 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:48,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48 WrapperNode [2020-09-24 21:45:48,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:48,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:48,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:48,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:48,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (1/1) ... [2020-09-24 21:45:48,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (1/1) ... [2020-09-24 21:45:48,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (1/1) ... [2020-09-24 21:45:48,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (1/1) ... [2020-09-24 21:45:48,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (1/1) ... [2020-09-24 21:45:48,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (1/1) ... [2020-09-24 21:45:48,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (1/1) ... [2020-09-24 21:45:48,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:48,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:48,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:48,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:48,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (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 21:45:48,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:48,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:48,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:48,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:48,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:48,457 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:48,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:49,952 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:49,953 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:49,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:49 BoogieIcfgContainer [2020-09-24 21:45:49,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:49,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:49,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:49,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:49,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:47" (1/3) ... [2020-09-24 21:45:49,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:49, skipping insertion in model container [2020-09-24 21:45:49,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:48" (2/3) ... [2020-09-24 21:45:49,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:49, skipping insertion in model container [2020-09-24 21:45:49,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:49" (3/3) ... [2020-09-24 21:45:49,971 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-24 21:45:49,982 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:49,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:50,012 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:50,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:50,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:50,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:50,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:50,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:50,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:50,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:50,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 21:45:50,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:50,087 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] [2020-09-24 21:45:50,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-24 21:45:50,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:50,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914305392] [2020-09-24 21:45:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:50,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 21:45:51,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-09-24 21:45:51,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:51,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:45:51,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:45:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:51,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:51,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:51,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:51,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:45:51,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:51,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:51,404 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 21:45:51,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914305392] [2020-09-24 21:45:51,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:51,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:51,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450743841] [2020-09-24 21:45:51,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:51,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:51,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:51,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:51,436 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:53,469 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-24 21:45:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:53,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-24 21:45:53,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:53,495 INFO L225 Difference]: With dead ends: 1160 [2020-09-24 21:45:53,496 INFO L226 Difference]: Without dead ends: 631 [2020-09-24 21:45:53,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-24 21:45:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-24 21:45:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-24 21:45:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-24 21:45:53,610 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-24 21:45:53,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:53,611 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-24 21:45:53,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:53,612 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-24 21:45:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 21:45:53,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:53,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:53,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:53,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:53,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:53,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-24 21:45:53,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:53,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312483592] [2020-09-24 21:45:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:53,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 21:45:58,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:45:58,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 21:45:58,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:45:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:58,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:58,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:58,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:58,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:45:58,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:58,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:58,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:58,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:59,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:45:59,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:59,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 21:45:59,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:45:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 21:45:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:59,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312483592] [2020-09-24 21:45:59,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:59,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:45:59,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078987728] [2020-09-24 21:45:59,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:45:59,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:59,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:45:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:45:59,184 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-24 21:46:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:01,195 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-24 21:46:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:46:01,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-24 21:46:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:01,200 INFO L225 Difference]: With dead ends: 1330 [2020-09-24 21:46:01,200 INFO L226 Difference]: Without dead ends: 769 [2020-09-24 21:46:01,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:46:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-24 21:46:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-24 21:46:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-24 21:46:01,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-24 21:46:01,254 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 140 [2020-09-24 21:46:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:01,255 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-24 21:46:01,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-24 21:46:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 21:46:01,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:01,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:01,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:01,260 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-24 21:46:01,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:01,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952424298] [2020-09-24 21:46:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:05,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:05,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 21:46:05,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4705 [2020-09-24 21:46:05,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:46:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 21:46:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:06,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:06,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:06,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:46:06,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:06,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:06,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:06,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:06,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:06,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-24 21:46:06,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:06,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:06,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:06,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:06,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952424298] [2020-09-24 21:46:06,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:06,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:06,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386597043] [2020-09-24 21:46:06,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:06,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:06,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:06,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:06,822 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 9 states. [2020-09-24 21:46:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:09,610 INFO L93 Difference]: Finished difference Result 1820 states and 2324 transitions. [2020-09-24 21:46:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:09,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 140 [2020-09-24 21:46:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:09,617 INFO L225 Difference]: With dead ends: 1820 [2020-09-24 21:46:09,617 INFO L226 Difference]: Without dead ends: 1104 [2020-09-24 21:46:09,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:46:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-09-24 21:46:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 886. [2020-09-24 21:46:09,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-24 21:46:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1118 transitions. [2020-09-24 21:46:09,654 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1118 transitions. Word has length 140 [2020-09-24 21:46:09,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:09,655 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1118 transitions. [2020-09-24 21:46:09,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:09,655 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1118 transitions. [2020-09-24 21:46:09,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 21:46:09,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:09,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:09,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:09,659 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:09,659 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-24 21:46:09,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:09,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177535046] [2020-09-24 21:46:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:09,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:13,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:13,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 21:46:13,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:13,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4283 [2020-09-24 21:46:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:46:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:13,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:13,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:14,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:14,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:14,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:14,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:46:14,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:14,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:14,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:14,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-09-24 21:46:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:14,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:14,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177535046] [2020-09-24 21:46:14,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:14,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:46:14,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547023019] [2020-09-24 21:46:14,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:46:14,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:14,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:46:14,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:14,741 INFO L87 Difference]: Start difference. First operand 886 states and 1118 transitions. Second operand 12 states. [2020-09-24 21:46:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:17,777 INFO L93 Difference]: Finished difference Result 1684 states and 2194 transitions. [2020-09-24 21:46:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:46:17,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2020-09-24 21:46:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:17,786 INFO L225 Difference]: With dead ends: 1684 [2020-09-24 21:46:17,787 INFO L226 Difference]: Without dead ends: 935 [2020-09-24 21:46:17,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:46:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-24 21:46:17,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 884. [2020-09-24 21:46:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-24 21:46:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1112 transitions. [2020-09-24 21:46:17,834 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1112 transitions. Word has length 146 [2020-09-24 21:46:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:17,836 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1112 transitions. [2020-09-24 21:46:17,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:46:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1112 transitions. [2020-09-24 21:46:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-24 21:46:17,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:17,842 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:17,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:17,843 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:17,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2009740102, now seen corresponding path program 1 times [2020-09-24 21:46:17,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:17,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354449191] [2020-09-24 21:46:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:22,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-24 21:46:22,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:46:22,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:22,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:46:22,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:22,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:22,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:22,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:22,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:46:22,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:22,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:22,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:22,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:22,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:22,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:23,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:23,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:23,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:23,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 21:46:23,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:23,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:23,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:23,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 21:46:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:23,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:46:23,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354449191] [2020-09-24 21:46:23,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:23,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:23,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442375079] [2020-09-24 21:46:23,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:23,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:23,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:23,537 INFO L87 Difference]: Start difference. First operand 884 states and 1112 transitions. Second operand 8 states. [2020-09-24 21:46:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:25,636 INFO L93 Difference]: Finished difference Result 1967 states and 2636 transitions. [2020-09-24 21:46:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:25,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-24 21:46:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:25,644 INFO L225 Difference]: With dead ends: 1967 [2020-09-24 21:46:25,644 INFO L226 Difference]: Without dead ends: 1248 [2020-09-24 21:46:25,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:25,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2020-09-24 21:46:25,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1210. [2020-09-24 21:46:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-09-24 21:46:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1559 transitions. [2020-09-24 21:46:25,683 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1559 transitions. Word has length 219 [2020-09-24 21:46:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:25,683 INFO L479 AbstractCegarLoop]: Abstraction has 1210 states and 1559 transitions. [2020-09-24 21:46:25,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1559 transitions. [2020-09-24 21:46:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 21:46:25,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:25,688 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:46:25,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:25,688 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:25,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1687252463, now seen corresponding path program 1 times [2020-09-24 21:46:25,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:25,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472950406] [2020-09-24 21:46:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:30,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 21:46:30,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:46:30,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-24 21:46:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:30,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:30,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:30,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:46:30,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:30,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:30,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:30,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:30,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 21:46:30,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:30,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:30,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:30,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:30,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:30,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:30,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:31,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:31,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 21:46:31,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:46:31,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472950406] [2020-09-24 21:46:31,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:31,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:31,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763074896] [2020-09-24 21:46:31,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:31,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:31,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:31,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:31,197 INFO L87 Difference]: Start difference. First operand 1210 states and 1559 transitions. Second operand 9 states. [2020-09-24 21:46:34,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:34,976 INFO L93 Difference]: Finished difference Result 3670 states and 5117 transitions. [2020-09-24 21:46:34,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:46:34,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2020-09-24 21:46:34,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:34,991 INFO L225 Difference]: With dead ends: 3670 [2020-09-24 21:46:34,991 INFO L226 Difference]: Without dead ends: 2625 [2020-09-24 21:46:34,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:46:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-09-24 21:46:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2209. [2020-09-24 21:46:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2020-09-24 21:46:35,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 2843 transitions. [2020-09-24 21:46:35,078 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 2843 transitions. Word has length 225 [2020-09-24 21:46:35,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:35,078 INFO L479 AbstractCegarLoop]: Abstraction has 2209 states and 2843 transitions. [2020-09-24 21:46:35,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:35,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 2843 transitions. [2020-09-24 21:46:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-24 21:46:35,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:35,098 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:46:35,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:46:35,098 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:35,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:35,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1541615857, now seen corresponding path program 1 times [2020-09-24 21:46:35,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:35,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29046568] [2020-09-24 21:46:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking...