/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:40:51,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:40:51,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:40:51,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:40:51,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:40:51,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:40:51,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:40:51,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:40:51,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:40:51,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:40:51,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:40:51,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:40:51,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:40:51,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:40:51,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:40:51,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:40:51,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:40:51,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:40:51,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:40:51,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:40:51,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:40:51,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:40:51,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:40:51,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:40:51,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:40:51,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:40:51,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:40:51,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:40:51,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:40:51,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:40:51,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:40:51,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:40:51,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:40:51,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:40:51,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:40:51,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:40:51,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:40:51,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:40:51,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:40:51,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:40:51,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:40:51,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 01:40:51,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:40:51,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:40:51,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:40:51,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:40:51,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:40:51,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:40:51,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:40:51,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:40:51,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:40:51,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:40:51,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:40:51,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:40:51,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:40:51,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:40:51,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:40:51,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:40:51,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:40:51,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:40:51,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:40:51,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:40:51,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:40:51,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:40:51,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:40:51,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:40:51,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:40:51,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:40:51,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:40:51,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:40:51,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:40:51,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:40:51,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:40:51,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:40:51,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:40:51,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:40:51,453 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:40:51,454 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label48.c [2020-10-14 01:40:51,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/755903014/32f4fdb7ba2a42c48a1e99278a0844bc/FLAGda84a4337 [2020-10-14 01:40:52,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:40:52,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label48.c [2020-10-14 01:40:52,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/755903014/32f4fdb7ba2a42c48a1e99278a0844bc/FLAGda84a4337 [2020-10-14 01:40:52,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/755903014/32f4fdb7ba2a42c48a1e99278a0844bc [2020-10-14 01:40:52,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:40:52,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:40:52,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:40:52,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:40:52,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:40:52,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:40:52" (1/1) ... [2020-10-14 01:40:52,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2daff610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:52, skipping insertion in model container [2020-10-14 01:40:52,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:40:52" (1/1) ... [2020-10-14 01:40:52,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:40:53,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:40:55,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:40:55,452 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:40:56,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:40:56,764 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:40:56,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56 WrapperNode [2020-10-14 01:40:56,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:40:56,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:40:56,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:40:56,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:40:56,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... [2020-10-14 01:40:56,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... [2020-10-14 01:40:56,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... [2020-10-14 01:40:56,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... [2020-10-14 01:40:57,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... [2020-10-14 01:40:57,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... [2020-10-14 01:40:57,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... [2020-10-14 01:40:57,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:40:57,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:40:57,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:40:57,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:40:57,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:40:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:40:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:40:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:40:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:40:57,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:40:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:40:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:40:57,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:40:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:40:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:40:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:40:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:40:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:40:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:40:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:40:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:40:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:40:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:40:57,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:41:04,689 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:41:04,690 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:41:04,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:41:04 BoogieIcfgContainer [2020-10-14 01:41:04,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:41:04,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:41:04,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:41:04,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:41:04,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:40:52" (1/3) ... [2020-10-14 01:41:04,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47410e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:41:04, skipping insertion in model container [2020-10-14 01:41:04,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:40:56" (2/3) ... [2020-10-14 01:41:04,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47410e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:41:04, skipping insertion in model container [2020-10-14 01:41:04,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:41:04" (3/3) ... [2020-10-14 01:41:04,725 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label48.c [2020-10-14 01:41:04,735 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:41:04,745 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:41:04,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:41:04,790 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:41:04,791 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:41:04,791 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:41:04,791 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:41:04,791 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:41:04,791 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:41:04,792 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:41:04,792 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:41:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:41:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 954 [2020-10-14 01:41:04,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:41:04,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:41:04,885 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:41:04,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:41:04,892 INFO L82 PathProgramCache]: Analyzing trace with hash 830526608, now seen corresponding path program 1 times [2020-10-14 01:41:04,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:41:04,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942337544] [2020-10-14 01:41:04,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:41:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:08,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:10,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:10,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 969 [2020-10-14 01:41:10,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:41:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-14 01:41:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:10,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:41:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:41:10,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 963 [2020-10-14 01:41:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:41:12,049 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:41:12,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:41:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:12,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:41:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:41:12,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:12,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:41:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:41:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:41:13,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942337544] [2020-10-14 01:41:13,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:41:13,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:41:13,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264906758] [2020-10-14 01:41:13,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:41:13,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:41:13,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:41:13,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:41:13,119 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:41:13,302 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:41:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:41:26,569 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 01:41:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:41:26,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 953 [2020-10-14 01:41:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:41:26,620 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 01:41:26,620 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 01:41:26,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:41:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 01:41:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 01:41:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 01:41:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 01:41:26,805 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 953 [2020-10-14 01:41:26,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:41:26,808 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 01:41:26,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:41:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 01:41:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2020-10-14 01:41:26,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:41:26,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:41:26,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:41:26,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:41:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:41:26,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1590448205, now seen corresponding path program 1 times [2020-10-14 01:41:26,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:41:26,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396924401] [2020-10-14 01:41:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:41:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-14 01:41:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:41:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-14 01:41:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:32,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:41:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:41:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:41:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:32,854 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:41:32,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:41:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:32,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:32,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:41:32,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:41:32,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:32,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:41:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:41:32,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:41:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:33,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:33,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:41:33,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 01:41:33,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:33,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:41:33,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:41:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:41:33,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396924401] [2020-10-14 01:41:33,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:41:33,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:41:33,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544878272] [2020-10-14 01:41:33,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:41:33,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:41:33,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:41:33,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:41:33,736 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 7 states. [2020-10-14 01:41:33,877 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:41:34,864 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:41:50,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:41:50,453 INFO L93 Difference]: Finished difference Result 7013 states and 11833 transitions. [2020-10-14 01:41:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:41:50,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 965 [2020-10-14 01:41:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:41:50,480 INFO L225 Difference]: With dead ends: 7013 [2020-10-14 01:41:50,481 INFO L226 Difference]: Without dead ends: 4646 [2020-10-14 01:41:50,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:41:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2020-10-14 01:41:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 4580. [2020-10-14 01:41:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4580 states. [2020-10-14 01:41:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7050 transitions. [2020-10-14 01:41:50,626 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7050 transitions. Word has length 965 [2020-10-14 01:41:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:41:50,626 INFO L479 AbstractCegarLoop]: Abstraction has 4580 states and 7050 transitions. [2020-10-14 01:41:50,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:41:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7050 transitions. [2020-10-14 01:41:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 970 [2020-10-14 01:41:50,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:41:50,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:41:50,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:41:50,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:41:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:41:50,648 INFO L82 PathProgramCache]: Analyzing trace with hash 203125461, now seen corresponding path program 1 times [2020-10-14 01:41:50,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:41:50,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237745539] [2020-10-14 01:41:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:41:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:50,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:55,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:55,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 987 [2020-10-14 01:41:55,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:41:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5114 [2020-10-14 01:41:55,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:55,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:41:55,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:41:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:41:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:56,626 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:41:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:41:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:56,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:56,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:41:56,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:41:56,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:56,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:41:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:56,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:41:56,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:56,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:41:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:56,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:56,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:56,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:41:56,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:56,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 01:41:56,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:56,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:41:56,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:41:56,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:41:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:41:57,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237745539] [2020-10-14 01:41:57,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:41:57,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:41:57,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209706560] [2020-10-14 01:41:57,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:41:57,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:41:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:41:57,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:41:57,328 INFO L87 Difference]: Start difference. First operand 4580 states and 7050 transitions. Second operand 7 states. [2020-10-14 01:41:57,476 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:41:57,764 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:42:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:42:14,610 INFO L93 Difference]: Finished difference Result 13766 states and 21616 transitions. [2020-10-14 01:42:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:42:14,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 969 [2020-10-14 01:42:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:42:14,666 INFO L225 Difference]: With dead ends: 13766 [2020-10-14 01:42:14,667 INFO L226 Difference]: Without dead ends: 9192 [2020-10-14 01:42:14,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:42:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9192 states. [2020-10-14 01:42:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9192 to 9040. [2020-10-14 01:42:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9040 states. [2020-10-14 01:42:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9040 states to 9040 states and 12958 transitions. [2020-10-14 01:42:14,972 INFO L78 Accepts]: Start accepts. Automaton has 9040 states and 12958 transitions. Word has length 969 [2020-10-14 01:42:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:42:14,973 INFO L479 AbstractCegarLoop]: Abstraction has 9040 states and 12958 transitions. [2020-10-14 01:42:14,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:42:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 9040 states and 12958 transitions. [2020-10-14 01:42:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2020-10-14 01:42:15,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:42:15,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:42:15,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:42:15,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:42:15,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:42:15,035 INFO L82 PathProgramCache]: Analyzing trace with hash -856523262, now seen corresponding path program 1 times [2020-10-14 01:42:15,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:42:15,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237800941] [2020-10-14 01:42:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:42:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:15,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:20,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-14 01:42:20,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:42:20,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5327 [2020-10-14 01:42:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:20,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:42:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:42:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 01:42:20,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:42:20,818 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:42:20,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:42:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:20,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:20,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:20,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:42:20,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:20,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:42:20,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:20,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:42:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:42:20,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:42:20,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:42:20,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:42:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:20,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:20,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:42:20,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:42:20,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:20,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:42:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:42:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:42:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:42:20,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:42:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:21,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:42:21,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:42:21,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:42:21,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 01:42:21,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:42:21,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:42:21,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:42:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:42:21,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:42:21,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:42:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:42:21,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237800941] [2020-10-14 01:42:21,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:42:21,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:42:21,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879067193] [2020-10-14 01:42:21,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:42:21,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:42:21,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:42:21,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:42:21,491 INFO L87 Difference]: Start difference. First operand 9040 states and 12958 transitions. Second operand 8 states. [2020-10-14 01:42:21,698 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:42:22,122 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:42:22,478 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:42:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:42:55,624 INFO L93 Difference]: Finished difference Result 44630 states and 71739 transitions. [2020-10-14 01:42:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:42:55,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 973 [2020-10-14 01:42:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:42:55,825 INFO L225 Difference]: With dead ends: 44630 [2020-10-14 01:42:55,825 INFO L226 Difference]: Without dead ends: 35596 [2020-10-14 01:42:55,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:42:55,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35596 states. [2020-10-14 01:42:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35596 to 35387. [2020-10-14 01:42:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35387 states. [2020-10-14 01:42:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35387 states to 35387 states and 51033 transitions. [2020-10-14 01:42:56,924 INFO L78 Accepts]: Start accepts. Automaton has 35387 states and 51033 transitions. Word has length 973 [2020-10-14 01:42:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:42:56,925 INFO L479 AbstractCegarLoop]: Abstraction has 35387 states and 51033 transitions. [2020-10-14 01:42:56,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:42:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 35387 states and 51033 transitions. [2020-10-14 01:42:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2020-10-14 01:42:57,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:42:57,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:42:57,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:42:57,080 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:42:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:42:57,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2069478922, now seen corresponding path program 1 times [2020-10-14 01:42:57,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:42:57,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313262308] [2020-10-14 01:42:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:42:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:42:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:42:57,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:02,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:02,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 997 [2020-10-14 01:43:02,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:43:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5201 [2020-10-14 01:43:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:02,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:43:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:43:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:02,651 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:43:02,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:43:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:02,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:02,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:43:02,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:43:02,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:02,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:43:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:02,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:43:02,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:43:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:02,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:02,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:43:02,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:43:02,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:02,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:43:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:02,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:43:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:43:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:02,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:02,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:43:02,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 01:43:02,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:02,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:43:02,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:43:02,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:43:03,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313262308] [2020-10-14 01:43:03,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:43:03,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:43:03,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062172954] [2020-10-14 01:43:03,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:43:03,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:43:03,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:43:03,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:43:03,226 INFO L87 Difference]: Start difference. First operand 35387 states and 51033 transitions. Second operand 7 states. [2020-10-14 01:43:03,442 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:43:03,776 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:43:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:43:22,938 INFO L93 Difference]: Finished difference Result 89943 states and 162698 transitions. [2020-10-14 01:43:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:43:22,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 977 [2020-10-14 01:43:22,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:43:23,295 INFO L225 Difference]: With dead ends: 89943 [2020-10-14 01:43:23,295 INFO L226 Difference]: Without dead ends: 54562 [2020-10-14 01:43:23,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:43:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54562 states. [2020-10-14 01:43:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54562 to 53477. [2020-10-14 01:43:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53477 states. [2020-10-14 01:43:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53477 states to 53477 states and 81915 transitions. [2020-10-14 01:43:25,427 INFO L78 Accepts]: Start accepts. Automaton has 53477 states and 81915 transitions. Word has length 977 [2020-10-14 01:43:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:43:25,428 INFO L479 AbstractCegarLoop]: Abstraction has 53477 states and 81915 transitions. [2020-10-14 01:43:25,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:43:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 53477 states and 81915 transitions. [2020-10-14 01:43:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-14 01:43:27,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:43:27,411 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:43:27,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:43:27,412 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:43:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:43:27,413 INFO L82 PathProgramCache]: Analyzing trace with hash -994878327, now seen corresponding path program 1 times [2020-10-14 01:43:27,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:43:27,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631280659] [2020-10-14 01:43:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:43:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:27,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:32,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:32,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-14 01:43:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:43:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-14 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 01:43:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:43:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:33,018 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:43:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:43:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:33,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:33,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:33,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:43:33,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:33,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:43:33,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:33,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:33,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:43:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:43:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:43:33,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:43:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:33,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:43:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:33,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:43:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:33,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:43:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:43:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:33,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:43:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:43:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 01:43:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 01:43:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:43:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:43:33,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:43:33,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:43:33,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:43:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 01:43:33,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631280659] [2020-10-14 01:43:33,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:43:33,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:43:33,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632671358] [2020-10-14 01:43:33,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:43:33,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:43:33,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:43:33,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:43:33,577 INFO L87 Difference]: Start difference. First operand 53477 states and 81915 transitions. Second operand 7 states. [2020-10-14 01:43:33,893 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:43:35,280 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:43:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:43:53,786 INFO L93 Difference]: Finished difference Result 161578 states and 280880 transitions. [2020-10-14 01:43:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:43:53,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 989 [2020-10-14 01:43:53,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:43:54,274 INFO L225 Difference]: With dead ends: 161578 [2020-10-14 01:43:54,274 INFO L226 Difference]: Without dead ends: 108107 [2020-10-14 01:43:54,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:43:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108107 states. [2020-10-14 01:43:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108107 to 107441. [2020-10-14 01:43:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107441 states. [2020-10-14 01:44:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107441 states to 107441 states and 171145 transitions. [2020-10-14 01:44:00,358 INFO L78 Accepts]: Start accepts. Automaton has 107441 states and 171145 transitions. Word has length 989 [2020-10-14 01:44:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:44:00,358 INFO L479 AbstractCegarLoop]: Abstraction has 107441 states and 171145 transitions. [2020-10-14 01:44:00,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:44:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 107441 states and 171145 transitions. [2020-10-14 01:44:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-14 01:44:00,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:44:00,734 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:44:00,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:44:00,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:44:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:44:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash -445747813, now seen corresponding path program 1 times [2020-10-14 01:44:00,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:44:00,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763724600] [2020-10-14 01:44:00,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:44:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:00,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:01,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-14 01:44:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:44:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-14 01:44:05,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:05,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:44:05,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 01:44:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:06,257 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:44:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:44:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:06,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:06,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:06,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:44:06,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:44:06,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:06,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:06,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:44:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:06,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:06,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:06,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:44:06,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:44:06,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:06,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:44:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:44:06,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:44:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:06,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:44:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:06,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:44:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 01:44:06,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:06,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:06,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:44:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:44:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:44:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 01:44:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:44:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:44:06,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:44:06,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:44:06,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:44:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:44:06,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:44:06,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:44:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:44:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 01:44:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:44:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:44:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 01:44:07,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763724600] [2020-10-14 01:44:07,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:44:07,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:44:07,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120447250] [2020-10-14 01:44:07,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:44:07,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:44:07,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:44:07,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:44:07,144 INFO L87 Difference]: Start difference. First operand 107441 states and 171145 transitions. Second operand 7 states. [2020-10-14 01:44:07,357 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:44:07,719 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129