/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:28,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:28,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:28,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:28,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:28,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:28,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:28,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:28,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:28,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:28,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:28,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:28,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:28,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:28,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:28,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:28,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:28,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:28,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:28,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:28,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:28,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:28,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:28,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:28,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:28,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:28,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:28,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:28,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:28,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:28,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:28,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:28,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:28,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:28,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:28,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:28,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:28,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:28,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:28,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:28,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:28,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:56:28,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:28,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:28,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:28,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:28,933 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:28,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:28,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:28,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:28,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:28,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:28,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:28,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:28,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:28,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:28,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:28,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:28,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:28,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:28,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:28,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:28,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:28,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:28,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:28,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:28,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:28,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:28,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:28,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:28,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:28,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:56:29,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:29,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:29,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:29,439 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:29,440 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:29,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 07:56:29,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316b9cf69/eaee864398a045ae9b9db5d14ae2b3d6/FLAG6abfd9f43 [2020-09-25 07:56:30,165 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:30,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-09-25 07:56:30,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316b9cf69/eaee864398a045ae9b9db5d14ae2b3d6/FLAG6abfd9f43 [2020-09-25 07:56:30,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/316b9cf69/eaee864398a045ae9b9db5d14ae2b3d6 [2020-09-25 07:56:30,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:30,437 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:30,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:30,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:30,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:30,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:30" (1/1) ... [2020-09-25 07:56:30,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629d3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:30, skipping insertion in model container [2020-09-25 07:56:30,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:30" (1/1) ... [2020-09-25 07:56:30,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:30,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:31,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:31,165 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:31,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:31,288 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:31,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31 WrapperNode [2020-09-25 07:56:31,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:31,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:31,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:31,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:31,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... [2020-09-25 07:56:31,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... [2020-09-25 07:56:31,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... [2020-09-25 07:56:31,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... [2020-09-25 07:56:31,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... [2020-09-25 07:56:31,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... [2020-09-25 07:56:31,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... [2020-09-25 07:56:31,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:31,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:31,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:31,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:31,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:31,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:31,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:32,987 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:32,987 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:32,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:32 BoogieIcfgContainer [2020-09-25 07:56:32,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:32,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:33,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:33,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:33,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:30" (1/3) ... [2020-09-25 07:56:33,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ffabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:33, skipping insertion in model container [2020-09-25 07:56:33,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:31" (2/3) ... [2020-09-25 07:56:33,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ffabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:33, skipping insertion in model container [2020-09-25 07:56:33,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:32" (3/3) ... [2020-09-25 07:56:33,011 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-09-25 07:56:33,026 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:33,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:33,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:33,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:33,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:33,113 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:33,113 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:33,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:33,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:33,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:33,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 07:56:33,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:33,157 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] [2020-09-25 07:56:33,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:33,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1703669257, now seen corresponding path program 1 times [2020-09-25 07:56:33,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:33,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244293682] [2020-09-25 07:56:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:56:34,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:34,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-09-25 07:56:34,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:34,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 07:56:34,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:34,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:56:34,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:34,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:34,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:34,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244293682] [2020-09-25 07:56:34,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:34,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:34,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286338970] [2020-09-25 07:56:34,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:34,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:34,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:34,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:34,752 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:36,888 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:56:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:36,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 07:56:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:36,914 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:56:36,914 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:56:36,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:56:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:56:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:56:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:56:37,024 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 62 [2020-09-25 07:56:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:37,025 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:56:37,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:56:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 07:56:37,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:37,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:37,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:37,034 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:37,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1996719641, now seen corresponding path program 1 times [2020-09-25 07:56:37,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:37,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492267648] [2020-09-25 07:56:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:40,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 07:56:40,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3723 [2020-09-25 07:56:40,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:40,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 07:56:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:40,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:40,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:41,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:56:41,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:41,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:41,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:41,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:41,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:41,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:41,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:41,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:41,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 07:56:41,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:41,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:41,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492267648] [2020-09-25 07:56:41,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:41,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:56:41,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510117579] [2020-09-25 07:56:41,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:56:41,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:41,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:56:41,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:41,243 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 07:56:43,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:43,004 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 07:56:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:56:43,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 07:56:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:43,014 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 07:56:43,014 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 07:56:43,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 07:56:43,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 07:56:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 07:56:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 07:56:43,062 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 141 [2020-09-25 07:56:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:43,063 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 07:56:43,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:56:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 07:56:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 07:56:43,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:43,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:43,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:43,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash -617946683, now seen corresponding path program 1 times [2020-09-25 07:56:43,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:43,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975764384] [2020-09-25 07:56:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 07:56:48,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:48,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:56:48,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:48,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 07:56:48,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:48,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:48,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:56:48,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:48,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:48,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:48,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 07:56:48,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:48,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:48,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975764384] [2020-09-25 07:56:48,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:48,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:56:48,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487185252] [2020-09-25 07:56:48,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:56:48,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:48,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:56:48,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:48,504 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 07:56:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:51,225 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 07:56:51,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:56:51,226 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 07:56:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:51,240 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 07:56:51,240 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 07:56:51,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 07:56:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 07:56:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 07:56:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1695 transitions. [2020-09-25 07:56:51,288 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1695 transitions. Word has length 151 [2020-09-25 07:56:51,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:51,288 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1695 transitions. [2020-09-25 07:56:51,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:56:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1695 transitions. [2020-09-25 07:56:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 07:56:51,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:51,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:51,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:51,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:51,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1755229107, now seen corresponding path program 1 times [2020-09-25 07:56:51,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:51,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230413987] [2020-09-25 07:56:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:51,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:51,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 07:56:53,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:56:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2158 [2020-09-25 07:56:53,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:53,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:53,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:56:53,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:53,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:56:53,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:53,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:53,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:53,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 07:56:53,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:53,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:53,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230413987] [2020-09-25 07:56:53,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:53,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:53,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771669936] [2020-09-25 07:56:53,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:53,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:53,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:53,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:53,827 INFO L87 Difference]: Start difference. First operand 1319 states and 1695 transitions. Second operand 7 states. [2020-09-25 07:56:56,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:56,162 INFO L93 Difference]: Finished difference Result 3319 states and 4494 transitions. [2020-09-25 07:56:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:56:56,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 07:56:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:56,183 INFO L225 Difference]: With dead ends: 3319 [2020-09-25 07:56:56,183 INFO L226 Difference]: Without dead ends: 2165 [2020-09-25 07:56:56,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-09-25 07:56:56,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1811. [2020-09-25 07:56:56,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-09-25 07:56:56,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2265 transitions. [2020-09-25 07:56:56,286 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2265 transitions. Word has length 153 [2020-09-25 07:56:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:56,287 INFO L479 AbstractCegarLoop]: Abstraction has 1811 states and 2265 transitions. [2020-09-25 07:56:56,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2265 transitions. [2020-09-25 07:56:56,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 07:56:56,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:56,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:56:56,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:56,299 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:56,299 INFO L82 PathProgramCache]: Analyzing trace with hash 100721030, now seen corresponding path program 1 times [2020-09-25 07:56:56,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:56,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565449] [2020-09-25 07:56:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:00,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 07:57:00,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:00,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4027 [2020-09-25 07:57:00,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:00,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:00,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 07:57:00,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 07:57:00,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:00,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:00,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:00,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:00,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:00,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:00,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 07:57:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:00,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 07:57:00,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:00,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 07:57:00,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 07:57:00,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:00,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 07:57:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:57:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 115 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:57:01,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565449] [2020-09-25 07:57:01,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:01,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:57:01,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449389952] [2020-09-25 07:57:01,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:01,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:01,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:01,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:01,099 INFO L87 Difference]: Start difference. First operand 1811 states and 2265 transitions. Second operand 7 states. [2020-09-25 07:57:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:03,535 INFO L93 Difference]: Finished difference Result 4283 states and 5647 transitions. [2020-09-25 07:57:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:03,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-09-25 07:57:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:03,551 INFO L225 Difference]: With dead ends: 4283 [2020-09-25 07:57:03,551 INFO L226 Difference]: Without dead ends: 2637 [2020-09-25 07:57:03,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2020-09-25 07:57:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2299. [2020-09-25 07:57:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-09-25 07:57:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2828 transitions. [2020-09-25 07:57:03,634 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2828 transitions. Word has length 252 [2020-09-25 07:57:03,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:03,635 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 2828 transitions. [2020-09-25 07:57:03,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2828 transitions. [2020-09-25 07:57:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 07:57:03,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:03,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:03,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:03,642 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:03,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1455418807, now seen corresponding path program 1 times [2020-09-25 07:57:03,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:03,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614356573] [2020-09-25 07:57:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:03,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:08,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 07:57:08,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:57:08,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:08,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:57:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:57:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:08,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:08,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:08,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:08,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:08,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:08,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:08,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:08,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:08,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 07:57:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:08,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:08,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:57:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:09,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 07:57:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:09,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 07:57:09,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:09,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:09,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:57:09,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:09,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614356573] [2020-09-25 07:57:09,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:09,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:57:09,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490823505] [2020-09-25 07:57:09,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:09,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:09,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:09,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:09,164 INFO L87 Difference]: Start difference. First operand 2299 states and 2828 transitions. Second operand 7 states. [2020-09-25 07:57:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:11,567 INFO L93 Difference]: Finished difference Result 5423 states and 6923 transitions. [2020-09-25 07:57:11,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:57:11,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-09-25 07:57:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:11,579 INFO L225 Difference]: With dead ends: 5423 [2020-09-25 07:57:11,579 INFO L226 Difference]: Without dead ends: 2177 [2020-09-25 07:57:11,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:57:11,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2020-09-25 07:57:11,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 2101. [2020-09-25 07:57:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-09-25 07:57:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2546 transitions. [2020-09-25 07:57:11,645 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2546 transitions. Word has length 253 [2020-09-25 07:57:11,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:11,645 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 2546 transitions. [2020-09-25 07:57:11,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2546 transitions. [2020-09-25 07:57:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-09-25 07:57:11,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:11,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:11,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:11,654 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:11,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1285871462, now seen corresponding path program 1 times [2020-09-25 07:57:11,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:11,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655287991] [2020-09-25 07:57:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:11,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:11,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:11,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2546 [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 07:57:14,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:14,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:14,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 07:57:14,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:14,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 07:57:14,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:14,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 07:57:14,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:14,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-25 07:57:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 07:57:14,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 07:57:14,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:14,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 07:57:14,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:14,781 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-09-25 07:57:14,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655287991] [2020-09-25 07:57:14,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:14,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:14,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986213087] [2020-09-25 07:57:14,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:14,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:14,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:14,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:14,784 INFO L87 Difference]: Start difference. First operand 2101 states and 2546 transitions. Second operand 5 states. [2020-09-25 07:57:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:16,719 INFO L93 Difference]: Finished difference Result 4662 states and 5910 transitions. [2020-09-25 07:57:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:16,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-09-25 07:57:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:16,733 INFO L225 Difference]: With dead ends: 4662 [2020-09-25 07:57:16,734 INFO L226 Difference]: Without dead ends: 2726 [2020-09-25 07:57:16,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2020-09-25 07:57:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2400. [2020-09-25 07:57:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2400 states. [2020-09-25 07:57:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2883 transitions. [2020-09-25 07:57:16,804 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2883 transitions. Word has length 319 [2020-09-25 07:57:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:16,805 INFO L479 AbstractCegarLoop]: Abstraction has 2400 states and 2883 transitions. [2020-09-25 07:57:16,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2883 transitions. [2020-09-25 07:57:16,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-09-25 07:57:16,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:16,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:16,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:57:16,829 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1970147949, now seen corresponding path program 1 times [2020-09-25 07:57:16,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:16,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133509425] [2020-09-25 07:57:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking...