/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/Problem03_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:56:00,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:56:00,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:56:00,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:56:00,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:56:00,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:56:00,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:56:00,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:56:00,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:56:00,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:56:00,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:56:00,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:56:00,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:56:00,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:56:00,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:56:00,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:56:00,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:56:00,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:56:00,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:56:00,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:56:00,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:56:00,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:56:00,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:56:00,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:56:00,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:56:00,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:56:00,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:56:00,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:56:00,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:56:00,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:56:00,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:56:00,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:56:00,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:56:00,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:56:00,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:56:00,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:56:00,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:56:00,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:56:00,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:56:00,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:56:00,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:56:00,941 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 00:56:00,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:56:00,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:56:00,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:56:00,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:56:00,964 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:56:00,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:56:00,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:56:00,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:56:00,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:56:00,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:56:00,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:56:00,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:56:00,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:56:00,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:56:00,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:56:00,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:56:00,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:56:00,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:56:00,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:56:00,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:56:00,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:56:00,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:56:00,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:56:00,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:56:00,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:56:00,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:56:00,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:56:00,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:56:00,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:56:00,969 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 00:56:01,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:56:01,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:56:01,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:56:01,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:56:01,333 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:56:01,334 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54.c [2020-10-14 00:56:01,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/551b3f50d/8c58257d08904d8fa5d5f2e082fc3902/FLAGb3826cf37 [2020-10-14 00:56:02,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:56:02,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label54.c [2020-10-14 00:56:02,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/551b3f50d/8c58257d08904d8fa5d5f2e082fc3902/FLAGb3826cf37 [2020-10-14 00:56:02,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/551b3f50d/8c58257d08904d8fa5d5f2e082fc3902 [2020-10-14 00:56:02,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:56:02,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:56:02,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:56:02,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:56:02,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:56:02,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:56:02" (1/1) ... [2020-10-14 00:56:02,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:02, skipping insertion in model container [2020-10-14 00:56:02,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:56:02" (1/1) ... [2020-10-14 00:56:02,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:56:02,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:56:03,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:56:03,370 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:56:03,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:56:03,811 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:56:03,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03 WrapperNode [2020-10-14 00:56:03,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:56:03,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:56:03,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:56:03,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:56:03,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (1/1) ... [2020-10-14 00:56:03,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (1/1) ... [2020-10-14 00:56:03,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (1/1) ... [2020-10-14 00:56:03,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (1/1) ... [2020-10-14 00:56:03,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (1/1) ... [2020-10-14 00:56:03,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (1/1) ... [2020-10-14 00:56:03,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (1/1) ... [2020-10-14 00:56:04,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:56:04,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:56:04,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:56:04,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:56:04,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (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 00:56:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:56:04,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:56:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:56:04,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:56:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:56:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:56:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:56:04,088 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:56:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:56:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:56:04,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:56:06,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:56:06,112 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:56:06,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:56:06 BoogieIcfgContainer [2020-10-14 00:56:06,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:56:06,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:56:06,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:56:06,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:56:06,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:56:02" (1/3) ... [2020-10-14 00:56:06,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:56:06, skipping insertion in model container [2020-10-14 00:56:06,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:56:03" (2/3) ... [2020-10-14 00:56:06,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd046fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:56:06, skipping insertion in model container [2020-10-14 00:56:06,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:56:06" (3/3) ... [2020-10-14 00:56:06,128 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label54.c [2020-10-14 00:56:06,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:56:06,149 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:56:06,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:56:06,194 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:56:06,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:56:06,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:56:06,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:56:06,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:56:06,195 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:56:06,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:56:06,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:56:06,224 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:56:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 00:56:06,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:06,243 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] [2020-10-14 00:56:06,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:06,251 INFO L82 PathProgramCache]: Analyzing trace with hash -629671171, now seen corresponding path program 1 times [2020-10-14 00:56:06,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:06,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899171141] [2020-10-14 00:56:06,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:10,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 00:56:10,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:56:10,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3602 [2020-10-14 00:56:10,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:10,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:56:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:56:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-14 00:56:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 00:56:10,716 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:10,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:10,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:10,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:10,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:10,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:56:10,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:10,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:56:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:56:10,876 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 00:56:10,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899171141] [2020-10-14 00:56:10,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:56:10,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:56:10,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884688774] [2020-10-14 00:56:10,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 00:56:10,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 00:56:10,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 00:56:10,907 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 00:56:11,082 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:56:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:13,884 INFO L93 Difference]: Finished difference Result 862 states and 1514 transitions. [2020-10-14 00:56:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:56:13,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 172 [2020-10-14 00:56:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:13,909 INFO L225 Difference]: With dead ends: 862 [2020-10-14 00:56:13,909 INFO L226 Difference]: Without dead ends: 474 [2020-10-14 00:56:13,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 00:56:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2020-10-14 00:56:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 466. [2020-10-14 00:56:13,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-14 00:56:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 718 transitions. [2020-10-14 00:56:14,003 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 718 transitions. Word has length 172 [2020-10-14 00:56:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:14,004 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 718 transitions. [2020-10-14 00:56:14,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 00:56:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 718 transitions. [2020-10-14 00:56:14,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 00:56:14,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:14,014 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:56:14,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:56:14,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:14,016 INFO L82 PathProgramCache]: Analyzing trace with hash 18378772, now seen corresponding path program 1 times [2020-10-14 00:56:14,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:14,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416218348] [2020-10-14 00:56:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:14,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:14,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:16,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:17,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 00:56:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3748 [2020-10-14 00:56:17,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:17,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 00:56:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 00:56:17,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:18,140 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:18,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:18,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:18,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:18,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:18,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:18,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:18,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:18,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:18,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:56:18,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:56:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:18,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 00:56:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:56:18,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416218348] [2020-10-14 00:56:18,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:18,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:56:18,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127134248] [2020-10-14 00:56:18,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:56:18,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:18,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:56:18,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:56:18,314 INFO L87 Difference]: Start difference. First operand 466 states and 718 transitions. Second operand 5 states. [2020-10-14 00:56:18,454 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:21,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:21,576 INFO L93 Difference]: Finished difference Result 1353 states and 2111 transitions. [2020-10-14 00:56:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:56:21,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 00:56:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:21,594 INFO L225 Difference]: With dead ends: 1353 [2020-10-14 00:56:21,595 INFO L226 Difference]: Without dead ends: 893 [2020-10-14 00:56:21,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:56:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-10-14 00:56:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 887. [2020-10-14 00:56:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-10-14 00:56:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1319 transitions. [2020-10-14 00:56:21,663 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1319 transitions. Word has length 182 [2020-10-14 00:56:21,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:21,663 INFO L479 AbstractCegarLoop]: Abstraction has 887 states and 1319 transitions. [2020-10-14 00:56:21,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:56:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1319 transitions. [2020-10-14 00:56:21,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 00:56:21,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:21,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:21,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:56:21,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:21,669 INFO L82 PathProgramCache]: Analyzing trace with hash 112213578, now seen corresponding path program 1 times [2020-10-14 00:56:21,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:21,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818248580] [2020-10-14 00:56:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:23,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:23,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 00:56:23,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:56:23,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-10-14 00:56:23,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:23,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 00:56:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 00:56:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:23,701 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:23,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:23,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:56:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:23,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:23,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:23,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:56:23,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 00:56:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:23,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:23,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:56:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:56:23,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818248580] [2020-10-14 00:56:23,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:23,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:56:23,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446969854] [2020-10-14 00:56:23,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:56:23,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:23,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:56:23,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:56:23,958 INFO L87 Difference]: Start difference. First operand 887 states and 1319 transitions. Second operand 5 states. [2020-10-14 00:56:24,144 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:56:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:26,866 INFO L93 Difference]: Finished difference Result 2626 states and 3976 transitions. [2020-10-14 00:56:26,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:56:26,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 00:56:26,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:26,884 INFO L225 Difference]: With dead ends: 2626 [2020-10-14 00:56:26,884 INFO L226 Difference]: Without dead ends: 1745 [2020-10-14 00:56:26,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:56:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-10-14 00:56:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1724. [2020-10-14 00:56:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1724 states. [2020-10-14 00:56:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 2547 transitions. [2020-10-14 00:56:26,976 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 2547 transitions. Word has length 189 [2020-10-14 00:56:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:26,981 INFO L479 AbstractCegarLoop]: Abstraction has 1724 states and 2547 transitions. [2020-10-14 00:56:26,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:56:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 2547 transitions. [2020-10-14 00:56:26,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 00:56:26,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:26,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:26,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:56:26,989 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:26,990 INFO L82 PathProgramCache]: Analyzing trace with hash -904422649, now seen corresponding path program 1 times [2020-10-14 00:56:26,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:26,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255226844] [2020-10-14 00:56:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:32,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:32,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 00:56:32,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:32,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 00:56:32,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:32,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:56:32,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 00:56:32,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:32,298 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:32,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:32,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:32,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:32,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:32,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:32,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:32,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:32,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:56:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:56:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:32,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:32,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 00:56:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:32,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:32,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:56:32,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:32,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 00:56:32,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:32,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:56:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:56:32,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255226844] [2020-10-14 00:56:32,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:32,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:56:32,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053342292] [2020-10-14 00:56:32,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:56:32,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:32,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:56:32,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:56:32,656 INFO L87 Difference]: Start difference. First operand 1724 states and 2547 transitions. Second operand 5 states. [2020-10-14 00:56:32,795 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:35,162 INFO L93 Difference]: Finished difference Result 5132 states and 7767 transitions. [2020-10-14 00:56:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:56:35,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-14 00:56:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:35,185 INFO L225 Difference]: With dead ends: 5132 [2020-10-14 00:56:35,185 INFO L226 Difference]: Without dead ends: 3414 [2020-10-14 00:56:35,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:56:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2020-10-14 00:56:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 3408. [2020-10-14 00:56:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2020-10-14 00:56:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 4888 transitions. [2020-10-14 00:56:35,296 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 4888 transitions. Word has length 205 [2020-10-14 00:56:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:35,296 INFO L479 AbstractCegarLoop]: Abstraction has 3408 states and 4888 transitions. [2020-10-14 00:56:35,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:56:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 4888 transitions. [2020-10-14 00:56:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-14 00:56:35,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:35,307 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:35,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:56:35,308 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:35,308 INFO L82 PathProgramCache]: Analyzing trace with hash 770574533, now seen corresponding path program 1 times [2020-10-14 00:56:35,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:35,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966277219] [2020-10-14 00:56:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:35,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:40,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 00:56:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 00:56:40,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:40,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:56:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 00:56:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:40,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:40,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:40,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:40,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:56:40,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:40,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:40,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:40,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:40,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:56:40,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:40,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:40,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:40,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:56:40,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:56:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:40,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:40,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:56:40,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:40,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:56:40,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:40,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:56:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:40,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:56:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:40,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:40,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:56:40,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 00:56:40,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:40,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:56:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 00:56:40,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966277219] [2020-10-14 00:56:40,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:40,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:40,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137198313] [2020-10-14 00:56:40,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:40,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:40,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:40,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:40,930 INFO L87 Difference]: Start difference. First operand 3408 states and 4888 transitions. Second operand 7 states. [2020-10-14 00:56:41,105 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 00:56:43,586 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:44,160 INFO L93 Difference]: Finished difference Result 9892 states and 14978 transitions. [2020-10-14 00:56:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:56:44,161 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-14 00:56:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:44,201 INFO L225 Difference]: With dead ends: 9892 [2020-10-14 00:56:44,201 INFO L226 Difference]: Without dead ends: 6490 [2020-10-14 00:56:44,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 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 00:56:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2020-10-14 00:56:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 6414. [2020-10-14 00:56:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6414 states. [2020-10-14 00:56:44,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6414 states to 6414 states and 9420 transitions. [2020-10-14 00:56:44,468 INFO L78 Accepts]: Start accepts. Automaton has 6414 states and 9420 transitions. Word has length 222 [2020-10-14 00:56:44,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:44,468 INFO L479 AbstractCegarLoop]: Abstraction has 6414 states and 9420 transitions. [2020-10-14 00:56:44,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:44,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6414 states and 9420 transitions. [2020-10-14 00:56:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 00:56:44,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:44,490 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:44,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:56:44,491 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:44,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1339013419, now seen corresponding path program 1 times [2020-10-14 00:56:44,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:44,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248750998] [2020-10-14 00:56:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:44,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:44,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 00:56:49,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:56:49,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 00:56:49,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:49,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 00:56:49,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 00:56:49,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:49,762 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:49,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:49,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:49,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:56:49,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:56:49,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:49,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:49,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:49,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:49,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:56:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:56:49,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:56:49,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:49,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:49,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:56:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:49,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:49,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:56:49,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:49,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:56:49,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:49,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 00:56:49,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:56:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:50,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:56:50,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:50,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 00:56:50,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:50,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:50,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 00:56:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:50,260 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 00:56:50,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248750998] [2020-10-14 00:56:50,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:50,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:50,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738524696] [2020-10-14 00:56:50,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:50,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:50,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:50,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:50,265 INFO L87 Difference]: Start difference. First operand 6414 states and 9420 transitions. Second operand 7 states. [2020-10-14 00:56:50,454 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:56:52,742 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:56:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:56:53,452 INFO L93 Difference]: Finished difference Result 18910 states and 30103 transitions. [2020-10-14 00:56:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:56:53,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 00:56:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:56:53,530 INFO L225 Difference]: With dead ends: 18910 [2020-10-14 00:56:53,530 INFO L226 Difference]: Without dead ends: 12502 [2020-10-14 00:56:53,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 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 00:56:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12502 states. [2020-10-14 00:56:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12502 to 12357. [2020-10-14 00:56:53,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12357 states. [2020-10-14 00:56:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 18213 transitions. [2020-10-14 00:56:54,020 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 18213 transitions. Word has length 232 [2020-10-14 00:56:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:56:54,020 INFO L479 AbstractCegarLoop]: Abstraction has 12357 states and 18213 transitions. [2020-10-14 00:56:54,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:56:54,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 18213 transitions. [2020-10-14 00:56:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-14 00:56:54,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:56:54,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:54,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:56:54,060 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:56:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:56:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1831628375, now seen corresponding path program 1 times [2020-10-14 00:56:54,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:56:54,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014216554] [2020-10-14 00:56:54,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:56:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:56,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:58,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:59,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 00:56:59,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:56:59,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:56:59,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:59,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:56:59,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:56:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:56:59,273 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:56:59,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:56:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:59,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:59,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:56:59,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:59,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:56:59,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:59,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:59,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:59,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:56:59,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:56:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:56:59,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 00:56:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:59,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:56:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:56:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:56:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:56:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:59,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:56:59,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:59,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 00:56:59,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:59,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:56:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:56:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:56:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:59,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 00:56:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:56:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:56:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:56:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:56:59,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:56:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 00:56:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:56:59,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:56:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:56:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:56:59,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:56:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:56:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 67 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 00:56:59,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014216554] [2020-10-14 00:56:59,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:56:59,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:56:59,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757260108] [2020-10-14 00:56:59,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:56:59,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:56:59,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:56:59,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:56:59,674 INFO L87 Difference]: Start difference. First operand 12357 states and 18213 transitions. Second operand 7 states. [2020-10-14 00:57:00,893 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:03,309 INFO L93 Difference]: Finished difference Result 34459 states and 57019 transitions. [2020-10-14 00:57:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 00:57:03,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-14 00:57:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:03,481 INFO L225 Difference]: With dead ends: 34459 [2020-10-14 00:57:03,482 INFO L226 Difference]: Without dead ends: 22108 [2020-10-14 00:57:03,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:57:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22108 states. [2020-10-14 00:57:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22108 to 21655. [2020-10-14 00:57:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21655 states. [2020-10-14 00:57:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21655 states to 21655 states and 30587 transitions. [2020-10-14 00:57:04,383 INFO L78 Accepts]: Start accepts. Automaton has 21655 states and 30587 transitions. Word has length 235 [2020-10-14 00:57:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:04,383 INFO L479 AbstractCegarLoop]: Abstraction has 21655 states and 30587 transitions. [2020-10-14 00:57:04,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 21655 states and 30587 transitions. [2020-10-14 00:57:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 00:57:04,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:04,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:57:04,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:57:04,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:04,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1853688397, now seen corresponding path program 1 times [2020-10-14 00:57:04,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:04,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540955795] [2020-10-14 00:57:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:04,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:09,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:09,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 00:57:09,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:57:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4940 [2020-10-14 00:57:09,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:09,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 00:57:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:57:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:09,623 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:09,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:09,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:09,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:09,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:09,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:09,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:09,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:09,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:09,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:09,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:09,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:09,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:09,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:57:09,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:09,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 00:57:09,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:09,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:09,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:09,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 00:57:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:57:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:09,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:09,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:09,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 00:57:09,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:09,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:09,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:57:09,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:57:09,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540955795] [2020-10-14 00:57:09,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:09,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:09,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102663712] [2020-10-14 00:57:09,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:09,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:09,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:09,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:09,903 INFO L87 Difference]: Start difference. First operand 21655 states and 30587 transitions. Second operand 7 states. [2020-10-14 00:57:10,147 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:10,273 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:15,115 INFO L93 Difference]: Finished difference Result 41678 states and 63658 transitions. [2020-10-14 00:57:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:57:15,115 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-14 00:57:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:15,197 INFO L225 Difference]: With dead ends: 41678 [2020-10-14 00:57:15,197 INFO L226 Difference]: Without dead ends: 20029 [2020-10-14 00:57:15,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 00:57:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20029 states. [2020-10-14 00:57:15,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20029 to 19690. [2020-10-14 00:57:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19690 states. [2020-10-14 00:57:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19690 states to 19690 states and 27674 transitions. [2020-10-14 00:57:15,773 INFO L78 Accepts]: Start accepts. Automaton has 19690 states and 27674 transitions. Word has length 238 [2020-10-14 00:57:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:15,774 INFO L479 AbstractCegarLoop]: Abstraction has 19690 states and 27674 transitions. [2020-10-14 00:57:15,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19690 states and 27674 transitions. [2020-10-14 00:57:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 00:57:15,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:15,833 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:15,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:57:15,833 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:15,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2111665601, now seen corresponding path program 1 times [2020-10-14 00:57:15,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:15,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097870514] [2020-10-14 00:57:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:15,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:20,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:20,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 00:57:20,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:57:20,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-14 00:57:20,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:20,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 00:57:20,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 00:57:20,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:21,081 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:21,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:21,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:21,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:21,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:57:21,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:21,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:21,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:21,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:21,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:21,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:57:21,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:57:21,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:21,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:21,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:21,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 00:57:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:21,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:21,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:57:21,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:57:21,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:21,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:57:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:21,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 00:57:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 00:57:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 00:57:21,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:21,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 00:57:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 00:57:21,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097870514] [2020-10-14 00:57:21,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:21,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:21,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562763011] [2020-10-14 00:57:21,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:21,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:21,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:21,401 INFO L87 Difference]: Start difference. First operand 19690 states and 27674 transitions. Second operand 7 states. [2020-10-14 00:57:21,670 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:57:23,414 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:26,737 INFO L93 Difference]: Finished difference Result 51223 states and 78654 transitions. [2020-10-14 00:57:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:57:26,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-14 00:57:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:26,849 INFO L225 Difference]: With dead ends: 51223 [2020-10-14 00:57:26,849 INFO L226 Difference]: Without dead ends: 32162 [2020-10-14 00:57:26,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 00:57:26,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32162 states. [2020-10-14 00:57:27,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32162 to 30687. [2020-10-14 00:57:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30687 states. [2020-10-14 00:57:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30687 states to 30687 states and 41277 transitions. [2020-10-14 00:57:27,722 INFO L78 Accepts]: Start accepts. Automaton has 30687 states and 41277 transitions. Word has length 240 [2020-10-14 00:57:27,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:27,722 INFO L479 AbstractCegarLoop]: Abstraction has 30687 states and 41277 transitions. [2020-10-14 00:57:27,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 30687 states and 41277 transitions. [2020-10-14 00:57:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 00:57:27,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:27,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:57:27,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:57:27,811 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1907071015, now seen corresponding path program 1 times [2020-10-14 00:57:27,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:27,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183020878] [2020-10-14 00:57:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:30,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:30,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 00:57:30,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:57:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2747 [2020-10-14 00:57:30,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:30,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:57:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-14 00:57:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-14 00:57:30,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:30,801 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:30,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:30,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:30,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:57:30,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:30,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:30,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:57:30,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:30,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:57:30,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 00:57:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:30,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:57:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:57:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-14 00:57:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:31,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:31,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:31,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:31,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 00:57:31,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:31,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:31,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:57:31,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:57:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 64 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:57:31,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183020878] [2020-10-14 00:57:31,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:31,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:31,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239766190] [2020-10-14 00:57:31,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:31,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:31,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:31,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:31,247 INFO L87 Difference]: Start difference. First operand 30687 states and 41277 transitions. Second operand 7 states. [2020-10-14 00:57:31,376 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:31,766 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:57:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:34,684 INFO L93 Difference]: Finished difference Result 66148 states and 92904 transitions. [2020-10-14 00:57:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 00:57:34,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 00:57:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:34,804 INFO L225 Difference]: With dead ends: 66148 [2020-10-14 00:57:34,805 INFO L226 Difference]: Without dead ends: 38694 [2020-10-14 00:57:34,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-14 00:57:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38694 states. [2020-10-14 00:57:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38694 to 38282. [2020-10-14 00:57:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38282 states. [2020-10-14 00:57:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38282 states to 38282 states and 52254 transitions. [2020-10-14 00:57:36,033 INFO L78 Accepts]: Start accepts. Automaton has 38282 states and 52254 transitions. Word has length 244 [2020-10-14 00:57:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:36,034 INFO L479 AbstractCegarLoop]: Abstraction has 38282 states and 52254 transitions. [2020-10-14 00:57:36,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 38282 states and 52254 transitions. [2020-10-14 00:57:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 00:57:36,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:36,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:36,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:57:36,086 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:36,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1970853219, now seen corresponding path program 1 times [2020-10-14 00:57:36,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:36,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088417916] [2020-10-14 00:57:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:36,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:38,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:41,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:41,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 00:57:41,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:57:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 00:57:41,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:41,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-14 00:57:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 00:57:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:41,287 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:41,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:41,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:41,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:41,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:41,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:41,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:41,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:41,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:41,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:41,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:41,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:57:41,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:57:41,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:41,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:41,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:41,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:41,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 00:57:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:41,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:41,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:41,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 00:57:41,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:41,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 00:57:41,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:41,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:41,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:57:41,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:41,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 00:57:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:41,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:41,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:57:41,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 00:57:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:41,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:57:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 00:57:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 00:57:41,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088417916] [2020-10-14 00:57:41,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:41,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:57:41,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876363738] [2020-10-14 00:57:41,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:57:41,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:41,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:57:41,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:57:41,564 INFO L87 Difference]: Start difference. First operand 38282 states and 52254 transitions. Second operand 7 states. [2020-10-14 00:57:41,702 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:57:41,981 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:44,617 INFO L93 Difference]: Finished difference Result 83977 states and 117405 transitions. [2020-10-14 00:57:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:57:44,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-14 00:57:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:44,719 INFO L225 Difference]: With dead ends: 83977 [2020-10-14 00:57:44,719 INFO L226 Difference]: Without dead ends: 47642 [2020-10-14 00:57:44,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:57:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47642 states. [2020-10-14 00:57:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47642 to 47312. [2020-10-14 00:57:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47312 states. [2020-10-14 00:57:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47312 states to 47312 states and 62035 transitions. [2020-10-14 00:57:45,876 INFO L78 Accepts]: Start accepts. Automaton has 47312 states and 62035 transitions. Word has length 253 [2020-10-14 00:57:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:45,877 INFO L479 AbstractCegarLoop]: Abstraction has 47312 states and 62035 transitions. [2020-10-14 00:57:45,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:57:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 47312 states and 62035 transitions. [2020-10-14 00:57:45,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-14 00:57:45,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:45,977 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:57:45,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:57:45,978 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:45,979 INFO L82 PathProgramCache]: Analyzing trace with hash 605332876, now seen corresponding path program 1 times [2020-10-14 00:57:45,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:45,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617493206] [2020-10-14 00:57:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:51,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:51,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-14 00:57:51,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:57:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 00:57:51,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:51,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:57:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 00:57:51,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 00:57:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:51,348 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:57:51,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:57:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:51,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:51,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:51,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:57:51,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:57:51,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:51,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:57:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:51,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:51,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:57:51,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:57:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:51,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:51,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:57:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:57:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:57:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:51,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:57:51,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 00:57:51,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:57:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 00:57:51,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:57:51,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:57:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:57:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:57:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 00:57:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:57:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 00:57:51,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617493206] [2020-10-14 00:57:51,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:57:51,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:57:51,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153111559] [2020-10-14 00:57:51,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:57:51,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:57:51,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:57:51,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:57:51,680 INFO L87 Difference]: Start difference. First operand 47312 states and 62035 transitions. Second operand 5 states. [2020-10-14 00:57:51,897 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:57:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:57:54,533 INFO L93 Difference]: Finished difference Result 98532 states and 130019 transitions. [2020-10-14 00:57:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:57:54,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 301 [2020-10-14 00:57:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:57:54,704 INFO L225 Difference]: With dead ends: 98532 [2020-10-14 00:57:54,704 INFO L226 Difference]: Without dead ends: 53175 [2020-10-14 00:57:54,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:57:54,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53175 states. [2020-10-14 00:57:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53175 to 52105. [2020-10-14 00:57:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52105 states. [2020-10-14 00:57:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52105 states to 52105 states and 64806 transitions. [2020-10-14 00:57:55,983 INFO L78 Accepts]: Start accepts. Automaton has 52105 states and 64806 transitions. Word has length 301 [2020-10-14 00:57:55,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:57:55,984 INFO L479 AbstractCegarLoop]: Abstraction has 52105 states and 64806 transitions. [2020-10-14 00:57:55,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:57:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 52105 states and 64806 transitions. [2020-10-14 00:57:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 00:57:56,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:57:56,067 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:56,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:57:56,068 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:57:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:57:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1189402052, now seen corresponding path program 1 times [2020-10-14 00:57:56,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:57:56,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337392160] [2020-10-14 00:57:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:57:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:57:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:57:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-14 00:58:01,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:58:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 00:58:01,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 00:58:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:58:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,301 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:01,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:01,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:01,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:58:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:01,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:01,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:58:01,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:58:01,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:01,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:01,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:58:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:01,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:58:01,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:58:01,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:01,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:01,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:58:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:58:01,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:58:01,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 00:58:01,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-14 00:58:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:58:01,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 00:58:01,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 00:58:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 00:58:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-14 00:58:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:01,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:01,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:01,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:58:01,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:58:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:01,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:58:01,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 205 proven. 40 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-14 00:58:01,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337392160] [2020-10-14 00:58:01,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:01,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:01,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030903804] [2020-10-14 00:58:01,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:01,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:01,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:01,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:01,668 INFO L87 Difference]: Start difference. First operand 52105 states and 64806 transitions. Second operand 7 states. [2020-10-14 00:58:01,929 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:03,565 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:06,137 INFO L93 Difference]: Finished difference Result 103595 states and 134545 transitions. [2020-10-14 00:58:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:58:06,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-14 00:58:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:06,284 INFO L225 Difference]: With dead ends: 103595 [2020-10-14 00:58:06,284 INFO L226 Difference]: Without dead ends: 52422 [2020-10-14 00:58:06,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:58:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52422 states. [2020-10-14 00:58:07,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52422 to 51456. [2020-10-14 00:58:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51456 states. [2020-10-14 00:58:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51456 states to 51456 states and 63452 transitions. [2020-10-14 00:58:07,292 INFO L78 Accepts]: Start accepts. Automaton has 51456 states and 63452 transitions. Word has length 312 [2020-10-14 00:58:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:07,292 INFO L479 AbstractCegarLoop]: Abstraction has 51456 states and 63452 transitions. [2020-10-14 00:58:07,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 51456 states and 63452 transitions. [2020-10-14 00:58:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 00:58:07,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:07,357 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:58:07,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:58:07,358 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:07,358 INFO L82 PathProgramCache]: Analyzing trace with hash 894223414, now seen corresponding path program 1 times [2020-10-14 00:58:07,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:07,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412072035] [2020-10-14 00:58:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:07,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:07,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:09,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-14 00:58:12,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:58:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 00:58:12,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:58:12,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 00:58:12,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:12,545 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:12,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:58:12,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:12,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:12,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:58:12,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:58:12,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:12,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:58:12,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:58:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 00:58:12,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 00:58:12,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 00:58:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:58:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:58:12,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:12,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:58:12,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 00:58:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 00:58:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:58:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:58:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:12,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:58:12,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:58:12,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:58:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:58:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:12,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:58:12,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:12,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 175 proven. 73 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-14 00:58:14,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412072035] [2020-10-14 00:58:14,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:14,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:14,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057150711] [2020-10-14 00:58:14,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:14,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:14,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:14,252 INFO L87 Difference]: Start difference. First operand 51456 states and 63452 transitions. Second operand 7 states. [2020-10-14 00:58:14,386 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:17,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:17,283 INFO L93 Difference]: Finished difference Result 129024 states and 158774 transitions. [2020-10-14 00:58:17,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:58:17,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-14 00:58:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:17,431 INFO L225 Difference]: With dead ends: 129024 [2020-10-14 00:58:17,431 INFO L226 Difference]: Without dead ends: 82911 [2020-10-14 00:58:17,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:58:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82911 states. [2020-10-14 00:58:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82911 to 82879. [2020-10-14 00:58:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82879 states. [2020-10-14 00:58:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82879 states to 82879 states and 101989 transitions. [2020-10-14 00:58:18,618 INFO L78 Accepts]: Start accepts. Automaton has 82879 states and 101989 transitions. Word has length 333 [2020-10-14 00:58:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:18,619 INFO L479 AbstractCegarLoop]: Abstraction has 82879 states and 101989 transitions. [2020-10-14 00:58:18,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 82879 states and 101989 transitions. [2020-10-14 00:58:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 00:58:18,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:18,695 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 00:58:18,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:58:18,696 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash -163489143, now seen corresponding path program 1 times [2020-10-14 00:58:18,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:18,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474615742] [2020-10-14 00:58:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:18,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:18,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:23,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 00:58:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:23,919 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:23,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:23,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:24,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:24,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:24,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:58:24,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 00:58:24,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:24,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:24,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:58:24,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:58:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:24,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:24,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 00:58:24,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 00:58:24,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:24,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 00:58:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 00:58:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:24,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:24,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:24,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:58:24,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 00:58:24,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:24,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 00:58:24,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:24,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-14 00:58:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:24,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:24,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 00:58:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:24,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:24,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:58:24,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:24,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:58:24,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:24,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:58:24,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 193 proven. 71 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 00:58:24,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474615742] [2020-10-14 00:58:24,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:24,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:24,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534223141] [2020-10-14 00:58:24,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:24,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:24,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:24,365 INFO L87 Difference]: Start difference. First operand 82879 states and 101989 transitions. Second operand 7 states. [2020-10-14 00:58:24,586 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:24,989 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:58:29,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:29,181 INFO L93 Difference]: Finished difference Result 176002 states and 224505 transitions. [2020-10-14 00:58:29,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:58:29,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-14 00:58:29,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:29,444 INFO L225 Difference]: With dead ends: 176002 [2020-10-14 00:58:29,444 INFO L226 Difference]: Without dead ends: 95739 [2020-10-14 00:58:29,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 00:58:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95739 states. [2020-10-14 00:58:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95739 to 94198. [2020-10-14 00:58:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94198 states. [2020-10-14 00:58:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94198 states to 94198 states and 113326 transitions. [2020-10-14 00:58:33,228 INFO L78 Accepts]: Start accepts. Automaton has 94198 states and 113326 transitions. Word has length 333 [2020-10-14 00:58:33,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:33,228 INFO L479 AbstractCegarLoop]: Abstraction has 94198 states and 113326 transitions. [2020-10-14 00:58:33,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:33,228 INFO L276 IsEmpty]: Start isEmpty. Operand 94198 states and 113326 transitions. [2020-10-14 00:58:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-14 00:58:33,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:33,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:33,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:58:33,323 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:33,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:33,324 INFO L82 PathProgramCache]: Analyzing trace with hash -107740432, now seen corresponding path program 1 times [2020-10-14 00:58:33,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:33,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796469642] [2020-10-14 00:58:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:38,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:38,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-14 00:58:38,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 00:58:38,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 00:58:38,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:38,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 00:58:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 00:58:38,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:38,579 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:58:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:38,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:38,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:38,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:58:38,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:38,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:38,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:38,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:58:38,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 00:58:38,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:38,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 00:58:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:58:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:38,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:38,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:58:38,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:38,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 00:58:38,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:38,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:58:38,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-14 00:58:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:39,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:39,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:39,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:58:39,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:39,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:58:39,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:39,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:39,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:58:39,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 239 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 00:58:39,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796469642] [2020-10-14 00:58:39,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:39,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:39,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549970368] [2020-10-14 00:58:39,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:39,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:39,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:39,129 INFO L87 Difference]: Start difference. First operand 94198 states and 113326 transitions. Second operand 7 states. [2020-10-14 00:58:39,260 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:39,948 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:58:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:43,561 INFO L93 Difference]: Finished difference Result 179879 states and 217615 transitions. [2020-10-14 00:58:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:58:43,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-14 00:58:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:43,729 INFO L225 Difference]: With dead ends: 179879 [2020-10-14 00:58:43,729 INFO L226 Difference]: Without dead ends: 87867 [2020-10-14 00:58:43,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 00:58:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87867 states. [2020-10-14 00:58:44,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87867 to 85699. [2020-10-14 00:58:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85699 states. [2020-10-14 00:58:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85699 states to 85699 states and 99517 transitions. [2020-10-14 00:58:44,946 INFO L78 Accepts]: Start accepts. Automaton has 85699 states and 99517 transitions. Word has length 374 [2020-10-14 00:58:44,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:44,947 INFO L479 AbstractCegarLoop]: Abstraction has 85699 states and 99517 transitions. [2020-10-14 00:58:44,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 85699 states and 99517 transitions. [2020-10-14 00:58:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-14 00:58:45,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:45,069 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:58:45,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 00:58:45,069 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:45,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:45,069 INFO L82 PathProgramCache]: Analyzing trace with hash 602014366, now seen corresponding path program 1 times [2020-10-14 00:58:45,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:45,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556776383] [2020-10-14 00:58:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:45,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:45,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:50,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:50,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-14 00:58:50,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:58:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 00:58:50,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:50,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-10-14 00:58:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 00:58:50,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:50,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:58:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:50,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:50,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:50,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:58:50,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:50,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:58:50,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:50,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:50,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:50,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:50,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:58:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:50,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:50,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:50,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:58:50,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:58:50,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:50,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:58:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:58:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:50,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:58:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:50,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:51,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 00:58:51,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:51,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-10-14 00:58:51,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:51,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:58:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:58:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 00:58:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-14 00:58:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:52,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:58:52,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 00:58:52,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:58:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-14 00:58:52,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:58:52,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:58:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:58:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:58:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 00:58:52,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:58:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 384 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 00:58:52,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556776383] [2020-10-14 00:58:52,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:58:52,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:58:52,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113552553] [2020-10-14 00:58:52,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:58:52,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:58:52,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:58:52,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:58:52,425 INFO L87 Difference]: Start difference. First operand 85699 states and 99517 transitions. Second operand 7 states. [2020-10-14 00:58:52,564 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:58:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:58:54,520 INFO L93 Difference]: Finished difference Result 137247 states and 158541 transitions. [2020-10-14 00:58:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:58:54,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 436 [2020-10-14 00:58:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:58:54,605 INFO L225 Difference]: With dead ends: 137247 [2020-10-14 00:58:54,606 INFO L226 Difference]: Without dead ends: 55681 [2020-10-14 00:58:54,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:58:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55681 states. [2020-10-14 00:58:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55681 to 55651. [2020-10-14 00:58:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55651 states. [2020-10-14 00:58:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55651 states to 55651 states and 63117 transitions. [2020-10-14 00:58:55,292 INFO L78 Accepts]: Start accepts. Automaton has 55651 states and 63117 transitions. Word has length 436 [2020-10-14 00:58:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:58:55,292 INFO L479 AbstractCegarLoop]: Abstraction has 55651 states and 63117 transitions. [2020-10-14 00:58:55,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:58:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 55651 states and 63117 transitions. [2020-10-14 00:58:55,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2020-10-14 00:58:55,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:58:55,346 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:55,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 00:58:55,346 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:58:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:58:55,347 INFO L82 PathProgramCache]: Analyzing trace with hash 776169702, now seen corresponding path program 1 times [2020-10-14 00:58:55,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:58:55,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163376320] [2020-10-14 00:58:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:58:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:58:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:55,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:56,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:58:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:00,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-14 00:59:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 00:59:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 00:59:00,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:00,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:00,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 245 [2020-10-14 00:59:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 00:59:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:00,659 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:59:00,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:59:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:00,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:00,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:00,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:00,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:59:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:00,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:00,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 00:59:00,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:59:00,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:00,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:00,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:00,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-14 00:59:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:00,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:00,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 00:59:00,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:00,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:59:00,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:00,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:00,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 00:59:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:00,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:59:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 00:59:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:00,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 00:59:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 00:59:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 00:59:00,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:00,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:00,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-14 00:59:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:00,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:00,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 00:59:00,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:59:00,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:00,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:59:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:59:00,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:59:00,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 00:59:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:01,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:01,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 00:59:01,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 00:59:01,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:01,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:59:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:59:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 00:59:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:59:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-10-14 00:59:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:59:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:59:01,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:59:01,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 00:59:01,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:59:01,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 00:59:01,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:59:01,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:59:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:59:01,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 00:59:01,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:59:01,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:59:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 603 proven. 33 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-10-14 00:59:01,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163376320] [2020-10-14 00:59:01,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:59:01,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:59:01,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994266883] [2020-10-14 00:59:01,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:59:01,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:59:01,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:59:01,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:59:01,812 INFO L87 Difference]: Start difference. First operand 55651 states and 63117 transitions. Second operand 7 states. [2020-10-14 00:59:02,073 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:59:03,479 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:59:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:59:05,667 INFO L93 Difference]: Finished difference Result 116079 states and 135997 transitions. [2020-10-14 00:59:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:59:05,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 556 [2020-10-14 00:59:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:59:05,668 INFO L225 Difference]: With dead ends: 116079 [2020-10-14 00:59:05,668 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 00:59:05,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:59:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 00:59:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 00:59:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 00:59:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 00:59:05,771 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 556 [2020-10-14 00:59:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:59:05,771 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 00:59:05,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:59:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 00:59:05,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 00:59:05,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 00:59:05,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 00:59:10,329 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 1