/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:18:07,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:18:07,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:18:07,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:18:07,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:18:07,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:18:07,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:18:07,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:18:07,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:18:07,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:18:07,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:18:07,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:18:07,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:18:07,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:18:07,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:18:07,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:18:07,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:18:07,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:18:07,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:18:07,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:18:07,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:18:07,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:18:07,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:18:07,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:18:07,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:18:07,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:18:07,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:18:07,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:18:07,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:18:07,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:18:07,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:18:07,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:18:07,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:18:07,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:18:07,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:18:07,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:18:07,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:18:07,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:18:07,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:18:07,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:18:07,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:18:07,887 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 04:18:07,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:18:07,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:18:07,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:18:07,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:18:07,942 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:18:07,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:18:07,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:18:07,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:18:07,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:18:07,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:18:07,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:18:07,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:18:07,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:18:07,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:18:07,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:18:07,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:18:07,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:18:07,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:18:07,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:18:07,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:18:07,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:18:07,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:18:07,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:18:07,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:18:07,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:18:07,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:18:07,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:18:07,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:18:07,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:18:07,951 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:18:08,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:18:08,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:18:08,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:18:08,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:18:08,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:18:08,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 04:18:08,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/affdffe32/9bc6a8dcc53347219e5d4d02290f4329/FLAG7abcbacd4 [2020-09-25 04:18:09,051 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:18:09,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 04:18:09,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/affdffe32/9bc6a8dcc53347219e5d4d02290f4329/FLAG7abcbacd4 [2020-09-25 04:18:09,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/affdffe32/9bc6a8dcc53347219e5d4d02290f4329 [2020-09-25 04:18:09,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:18:09,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:18:09,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:09,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:18:09,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:18:09,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfa12c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09, skipping insertion in model container [2020-09-25 04:18:09,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:18:09,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:18:09,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:09,704 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:18:09,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:18:09,741 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:18:09,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09 WrapperNode [2020-09-25 04:18:09,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:18:09,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:18:09,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:18:09,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:18:09,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (1/1) ... [2020-09-25 04:18:09,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:18:09,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:18:09,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:18:09,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:18:09,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (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 04:18:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:18:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:18:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 04:18:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 04:18:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:18:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:18:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:18:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 04:18:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 04:18:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:18:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:18:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:18:10,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:18:10,179 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:18:10,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:10 BoogieIcfgContainer [2020-09-25 04:18:10,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:18:10,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:18:10,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:18:10,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:18:10,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:18:09" (1/3) ... [2020-09-25 04:18:10,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfaf47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:10, skipping insertion in model container [2020-09-25 04:18:10,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:18:09" (2/3) ... [2020-09-25 04:18:10,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfaf47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:18:10, skipping insertion in model container [2020-09-25 04:18:10,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:18:10" (3/3) ... [2020-09-25 04:18:10,195 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2020-09-25 04:18:10,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:18:10,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:18:10,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:18:10,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:18:10,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:18:10,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:18:10,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:18:10,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:18:10,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:18:10,285 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:18:10,285 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:18:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 04:18:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 04:18:10,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:10,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:10,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 04:18:10,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:10,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260738834] [2020-09-25 04:18:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:10,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:10,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:18:10,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 04:18:10,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:10,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:18:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:18:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:10,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:10,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:18:10,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:10,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:10,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:10,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:10,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:10,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:10,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:10,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:10,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:10,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:18:10,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:10,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:10,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:18:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:10,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:18:10,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:10,833 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 04:18:10,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260738834] [2020-09-25 04:18:10,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:10,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:10,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049914185] [2020-09-25 04:18:10,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:10,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:10,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:10,864 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 04:18:10,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:10,975 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 04:18:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:10,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 04:18:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:10,991 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:10,991 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:18:10,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:11,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:18:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:18:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:11,051 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 04:18:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:11,051 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:11,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:18:11,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:11,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:11,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:18:11,055 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:11,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:11,056 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 04:18:11,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:11,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141857245] [2020-09-25 04:18:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:18:11,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 04:18:11,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:11,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:11,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:11,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:18:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:11,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:11,290 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 04:18:11,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141857245] [2020-09-25 04:18:11,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:11,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:18:11,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712173276] [2020-09-25 04:18:11,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:18:11,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:11,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:18:11,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:18:11,298 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 04:18:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:11,384 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 04:18:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:18:11,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 04:18:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:11,386 INFO L225 Difference]: With dead ends: 50 [2020-09-25 04:18:11,387 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 04:18:11,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 04:18:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 04:18:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:18:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 04:18:11,399 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 04:18:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:11,399 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 04:18:11,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:18:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 04:18:11,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:18:11,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:11,402 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] [2020-09-25 04:18:11,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:18:11,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:11,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 04:18:11,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:11,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735253042] [2020-09-25 04:18:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:11,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:18:13,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:13,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-09-25 04:18:13,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:18:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:13,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:13,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:13,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:13,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 04:18:13,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:13,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:18:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:13,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:18:13,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:13,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:13,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:13,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:18:13,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:13,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:13,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:13,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:13,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:18:13,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735253042] [2020-09-25 04:18:13,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:18:13,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:18:13,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478637359] [2020-09-25 04:18:13,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:13,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:13,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:13,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:13,703 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 04:18:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:13,849 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 04:18:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:13,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 04:18:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:13,851 INFO L225 Difference]: With dead ends: 58 [2020-09-25 04:18:13,852 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 04:18:13,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 04:18:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 04:18:13,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:18:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:18:13,863 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 04:18:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:13,864 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:18:13,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:18:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:18:13,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:13,867 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:18:13,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:18:13,867 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:13,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:13,867 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 04:18:13,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:13,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74596886] [2020-09-25 04:18:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:14,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:15,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:15,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:18:15,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:18:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1652 [2020-09-25 04:18:15,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:15,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:15,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:18:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:15,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:15,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:15,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:15,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:15,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:15,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:15,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:15,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:15,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:15,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:15,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:18:16,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:16,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-09-25 04:18:16,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:16,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:18:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:18:16,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:16,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:16,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:16,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:16,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:18:16,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:16,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:16,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:18:16,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74596886] [2020-09-25 04:18:16,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:16,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:18:16,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502406872] [2020-09-25 04:18:16,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:16,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:16,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:16,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:16,127 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 04:18:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:16,251 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 04:18:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:16,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 04:18:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:16,254 INFO L225 Difference]: With dead ends: 72 [2020-09-25 04:18:16,254 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 04:18:16,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:18:16,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 04:18:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 04:18:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:18:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 04:18:16,266 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 04:18:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:16,266 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 04:18:16,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 04:18:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 04:18:16,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:16,269 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:18:16,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:18:16,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:16,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:16,270 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 04:18:16,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:16,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890569495] [2020-09-25 04:18:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:21,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:21,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 04:18:21,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:18:21,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:18:21,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:21,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:21,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:18:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:21,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:21,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:21,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:21,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:21,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:21,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:21,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:21,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:24,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 04:18:24,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:18:24,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3472 [2020-09-25 04:18:24,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:24,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:24,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:18:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:24,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:24,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:24,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:24,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:24,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:24,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 04:18:24,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:24,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:24,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:18:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:18:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:24,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:24,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:24,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:24,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:24,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:24,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:24,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:18:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:24,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:24,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:24,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:24,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:24,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:24,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:24,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:24,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:24,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:24,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 04:18:24,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:24,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 04:18:24,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890569495] [2020-09-25 04:18:24,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:24,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:18:24,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289544138] [2020-09-25 04:18:24,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:18:24,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:24,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:18:24,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:24,996 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 04:18:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:25,152 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 04:18:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:18:25,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 04:18:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:25,157 INFO L225 Difference]: With dead ends: 64 [2020-09-25 04:18:25,158 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 04:18:25,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:18:25,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 04:18:25,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 04:18:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 04:18:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 04:18:25,172 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 04:18:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:25,172 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 04:18:25,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:18:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 04:18:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 04:18:25,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:25,182 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-09-25 04:18:25,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:18:25,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:25,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:25,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 04:18:25,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:25,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854694944] [2020-09-25 04:18:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:26,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:30,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:18:30,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:18:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:18:30,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:30,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 04:18:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:30,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:30,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:30,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 04:18:35,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:18:35,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:18:35,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:18:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:35,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:35,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:35,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:18:35,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:35,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:35,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:35,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:35,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:18:35,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:18:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:18:35,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:35,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:35,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:35,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:35,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:35,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:35,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:18:35,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:18:35,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854694944] [2020-09-25 04:18:35,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:35,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:18:35,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268206470] [2020-09-25 04:18:35,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:18:35,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:35,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:18:35,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:35,388 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 6 states. [2020-09-25 04:18:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:35,466 INFO L93 Difference]: Finished difference Result 98 states and 128 transitions. [2020-09-25 04:18:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:35,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-09-25 04:18:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:35,468 INFO L225 Difference]: With dead ends: 98 [2020-09-25 04:18:35,468 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 04:18:35,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 04:18:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-25 04:18:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 04:18:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-25 04:18:35,477 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 67 [2020-09-25 04:18:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:35,478 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-25 04:18:35,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:18:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-25 04:18:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:18:35,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:35,480 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-09-25 04:18:35,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:18:35,481 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:35,481 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 04:18:35,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:35,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869380752] [2020-09-25 04:18:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:35,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:36,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:38,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:39,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:40,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:18:40,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:18:40,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:18:40,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:40,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:18:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:18:40,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 04:18:40,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:40,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:40,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:40,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:40,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:40,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:40,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:40,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:40,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:45,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 04:18:45,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:18:45,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:18:45,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:45,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:18:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 04:18:45,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:18:45,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:45,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:18:45,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 04:18:45,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:45,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:18:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:45,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:18:45,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:45,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:45,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:45,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:45,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:18:45,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:45,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:45,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:18:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:45,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:45,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:45,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:45,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:18:45,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:45,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:18:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:18:46,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:18:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 04:18:46,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 04:18:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:18:46,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:18:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:18:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:46,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 04:18:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:46,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:46,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:18:46,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:46,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:18:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:46,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:46,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 04:18:46,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869380752] [2020-09-25 04:18:46,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:46,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:18:46,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860278243] [2020-09-25 04:18:46,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:18:46,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:46,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:18:46,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:18:46,322 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 10 states. [2020-09-25 04:18:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:46,661 INFO L93 Difference]: Finished difference Result 118 states and 163 transitions. [2020-09-25 04:18:46,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:18:46,662 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 04:18:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:46,664 INFO L225 Difference]: With dead ends: 118 [2020-09-25 04:18:46,664 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 04:18:46,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:18:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 04:18:46,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-25 04:18:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 04:18:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2020-09-25 04:18:46,675 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 69 [2020-09-25 04:18:46,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:46,676 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2020-09-25 04:18:46,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:18:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2020-09-25 04:18:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 04:18:46,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:46,679 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:18:46,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:18:46,679 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:46,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2120760888, now seen corresponding path program 1 times [2020-09-25 04:18:46,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:46,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920633804] [2020-09-25 04:18:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:47,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:48,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 04:18:51,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 04:18:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:18:51,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 04:18:51,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:51,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:18:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:51,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:18:51,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:18:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:51,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:18:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:51,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:56,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 04:18:56,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 04:18:56,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:18:56,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:56,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:56,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:56,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:18:56,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:56,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:56,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:18:57,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:18:57,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-09-25 04:18:57,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:18:57,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:57,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:57,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:57,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:18:57,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:18:57,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:18:57,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:18:57,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:18:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:18:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:18:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:57,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:18:57,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:57,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:57,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:57,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:57,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:57,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:57,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 04:18:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:57,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 04:18:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:57,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:18:58,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:18:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-09-25 04:18:58,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:18:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 04:18:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:18:58,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 04:18:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:58,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:18:58,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:18:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 04:18:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:18:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:18:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:18:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:18:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:18:58,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:18:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:18:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:18:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:18:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:18:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 04:18:58,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920633804] [2020-09-25 04:18:58,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:18:58,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:18:58,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877494206] [2020-09-25 04:18:58,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:18:58,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:18:58,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:18:58,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:18:58,187 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand 6 states. [2020-09-25 04:18:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:18:58,267 INFO L93 Difference]: Finished difference Result 138 states and 192 transitions. [2020-09-25 04:18:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:18:58,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2020-09-25 04:18:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:18:58,269 INFO L225 Difference]: With dead ends: 138 [2020-09-25 04:18:58,269 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 04:18:58,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:18:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 04:18:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-25 04:18:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 04:18:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-09-25 04:18:58,292 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 101 [2020-09-25 04:18:58,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:18:58,292 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-09-25 04:18:58,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:18:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-09-25 04:18:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 04:18:58,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:18:58,295 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:18:58,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:18:58,295 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:18:58,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:18:58,295 INFO L82 PathProgramCache]: Analyzing trace with hash -271039366, now seen corresponding path program 1 times [2020-09-25 04:18:58,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:18:58,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157735229] [2020-09-25 04:18:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:18:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:18:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:58,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:18:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:02,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:03,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:19:03,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:03,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:19:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:19:03,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:19:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:19:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:19:03,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:19:03,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:19:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:19:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:19:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:19:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:19:03,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:19:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:19:03,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:03,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:19:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking...