/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/eca-rers2012/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:14,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:14,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:14,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:14,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:14,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:14,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:14,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:14,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:14,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:14,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:14,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:14,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:14,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:14,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:14,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:14,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:14,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:14,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:14,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:14,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:14,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:14,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:14,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:14,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:14,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:14,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:14,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:14,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:14,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:14,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:14,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:14,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:14,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:14,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:14,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:14,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:14,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:14,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:14,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:14,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:14,438 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 04:31:14,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:14,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:14,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:14,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:14,468 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:14,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:14,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:14,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:14,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:14,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:14,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:14,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:14,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:14,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:14,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:14,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:14,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:14,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:14,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:14,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:14,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:14,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:14,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:14,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:14,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:14,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:14,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:14,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:14,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:14,474 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 04:31:14,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:14,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:14,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:14,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:14,981 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:14,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 04:31:15,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f74df1915/7bf677129ace407c82c4c8845cf2b9ae/FLAGe9288154f [2020-09-25 04:31:15,751 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:15,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 04:31:15,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f74df1915/7bf677129ace407c82c4c8845cf2b9ae/FLAGe9288154f [2020-09-25 04:31:15,961 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f74df1915/7bf677129ace407c82c4c8845cf2b9ae [2020-09-25 04:31:15,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:15,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:15,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:15,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:15,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:15,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:15" (1/1) ... [2020-09-25 04:31:15,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1722e03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:15, skipping insertion in model container [2020-09-25 04:31:15,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:15" (1/1) ... [2020-09-25 04:31:16,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:16,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:16,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:16,887 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:17,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:17,182 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:17,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17 WrapperNode [2020-09-25 04:31:17,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:17,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:17,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:17,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:17,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (1/1) ... [2020-09-25 04:31:17,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (1/1) ... [2020-09-25 04:31:17,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (1/1) ... [2020-09-25 04:31:17,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (1/1) ... [2020-09-25 04:31:17,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (1/1) ... [2020-09-25 04:31:17,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (1/1) ... [2020-09-25 04:31:17,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (1/1) ... [2020-09-25 04:31:17,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:17,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:17,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:17,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:17,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (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 04:31:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:20,096 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:20,096 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:20,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:20 BoogieIcfgContainer [2020-09-25 04:31:20,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:20,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:20,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:20,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:20,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:15" (1/3) ... [2020-09-25 04:31:20,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba8d1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:20, skipping insertion in model container [2020-09-25 04:31:20,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:17" (2/3) ... [2020-09-25 04:31:20,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba8d1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:20, skipping insertion in model container [2020-09-25 04:31:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:20" (3/3) ... [2020-09-25 04:31:20,121 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 04:31:20,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:20,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:20,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:20,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:20,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:20,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:20,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:20,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:20,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:20,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:20,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 04:31:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 04:31:20,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:20,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:31:20,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:20,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:20,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 04:31:20,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:20,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270200722] [2020-09-25 04:31:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:21,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:21,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 04:31:21,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:21,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-09-25 04:31:21,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:21,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:31:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:31:21,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:21,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:21,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:21,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:31:21,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:21,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:21,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:21,434 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 04:31:21,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270200722] [2020-09-25 04:31:21,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:21,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:21,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052485895] [2020-09-25 04:31:21,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:21,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:21,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:21,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:21,468 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 04:31:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:25,301 INFO L93 Difference]: Finished difference Result 1935 states and 2532 transitions. [2020-09-25 04:31:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:25,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-25 04:31:25,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:25,330 INFO L225 Difference]: With dead ends: 1935 [2020-09-25 04:31:25,330 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 04:31:25,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 04:31:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 997. [2020-09-25 04:31:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-25 04:31:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-25 04:31:25,487 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 39 [2020-09-25 04:31:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:25,488 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-25 04:31:25,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-25 04:31:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 04:31:25,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:25,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:25,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:25,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:25,497 INFO L82 PathProgramCache]: Analyzing trace with hash 878303855, now seen corresponding path program 1 times [2020-09-25 04:31:25,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:25,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644489675] [2020-09-25 04:31:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:25,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 04:31:27,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-09-25 04:31:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 04:31:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:31:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:27,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:27,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:27,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:27,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:31:27,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 04:31:27,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:31:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:27,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644489675] [2020-09-25 04:31:27,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:27,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:27,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542713438] [2020-09-25 04:31:27,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:27,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:27,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:27,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:27,860 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 5 states. [2020-09-25 04:31:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:31,354 INFO L93 Difference]: Finished difference Result 2020 states and 2477 transitions. [2020-09-25 04:31:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:31,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-09-25 04:31:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:31,363 INFO L225 Difference]: With dead ends: 2020 [2020-09-25 04:31:31,363 INFO L226 Difference]: Without dead ends: 1286 [2020-09-25 04:31:31,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-09-25 04:31:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1243. [2020-09-25 04:31:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-09-25 04:31:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1537 transitions. [2020-09-25 04:31:31,407 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1537 transitions. Word has length 121 [2020-09-25 04:31:31,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:31,408 INFO L479 AbstractCegarLoop]: Abstraction has 1243 states and 1537 transitions. [2020-09-25 04:31:31,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1537 transitions. [2020-09-25 04:31:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 04:31:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:31,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:31,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:31,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1418175241, now seen corresponding path program 1 times [2020-09-25 04:31:31,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:31,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650190362] [2020-09-25 04:31:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:31,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:31,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:36,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 04:31:36,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:36,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:31:36,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:36,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 04:31:36,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:31:36,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:36,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:36,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:36,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:36,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:36,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:36,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:36,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:36,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:31:36,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:36,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 04:31:36,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:36,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:36,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:31:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:36,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650190362] [2020-09-25 04:31:36,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:36,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:36,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545566686] [2020-09-25 04:31:36,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:36,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:36,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:36,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:36,825 INFO L87 Difference]: Start difference. First operand 1243 states and 1537 transitions. Second operand 5 states. [2020-09-25 04:31:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:41,082 INFO L93 Difference]: Finished difference Result 3198 states and 4099 transitions. [2020-09-25 04:31:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:41,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-09-25 04:31:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:41,104 INFO L225 Difference]: With dead ends: 3198 [2020-09-25 04:31:41,104 INFO L226 Difference]: Without dead ends: 1972 [2020-09-25 04:31:41,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2020-09-25 04:31:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1932. [2020-09-25 04:31:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1932 states. [2020-09-25 04:31:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2434 transitions. [2020-09-25 04:31:41,175 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2434 transitions. Word has length 123 [2020-09-25 04:31:41,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:41,176 INFO L479 AbstractCegarLoop]: Abstraction has 1932 states and 2434 transitions. [2020-09-25 04:31:41,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2434 transitions. [2020-09-25 04:31:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 04:31:41,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:41,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:41,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:41,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:41,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1201167835, now seen corresponding path program 1 times [2020-09-25 04:31:41,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:41,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074726819] [2020-09-25 04:31:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:41,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 04:31:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:31:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2967 [2020-09-25 04:31:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:44,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 04:31:44,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:31:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:44,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:44,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:44,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:44,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:44,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 04:31:44,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:44,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 04:31:44,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:44,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:31:44,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:44,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074726819] [2020-09-25 04:31:44,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:44,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:44,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584632490] [2020-09-25 04:31:44,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:44,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:44,514 INFO L87 Difference]: Start difference. First operand 1932 states and 2434 transitions. Second operand 5 states. [2020-09-25 04:31:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:48,886 INFO L93 Difference]: Finished difference Result 3915 states and 5086 transitions. [2020-09-25 04:31:48,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:48,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 04:31:48,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:48,901 INFO L225 Difference]: With dead ends: 3915 [2020-09-25 04:31:48,902 INFO L226 Difference]: Without dead ends: 2474 [2020-09-25 04:31:48,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:48,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2020-09-25 04:31:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2422. [2020-09-25 04:31:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2020-09-25 04:31:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3038 transitions. [2020-09-25 04:31:48,978 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3038 transitions. Word has length 148 [2020-09-25 04:31:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:48,979 INFO L479 AbstractCegarLoop]: Abstraction has 2422 states and 3038 transitions. [2020-09-25 04:31:48,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3038 transitions. [2020-09-25 04:31:48,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 04:31:48,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:48,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:48,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:48,983 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:48,983 INFO L82 PathProgramCache]: Analyzing trace with hash -2079553613, now seen corresponding path program 1 times [2020-09-25 04:31:48,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:48,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462523662] [2020-09-25 04:31:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:49,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 04:31:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:51,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2441 [2020-09-25 04:31:51,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:51,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 04:31:51,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:31:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:51,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:51,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:51,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:51,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:51,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 04:31:51,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:51,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 04:31:51,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:51,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:51,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:31:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:51,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462523662] [2020-09-25 04:31:51,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:51,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:51,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321267361] [2020-09-25 04:31:51,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:51,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:51,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:51,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:51,854 INFO L87 Difference]: Start difference. First operand 2422 states and 3038 transitions. Second operand 5 states. [2020-09-25 04:31:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:55,591 INFO L93 Difference]: Finished difference Result 6256 states and 8119 transitions. [2020-09-25 04:31:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:55,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 04:31:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:55,612 INFO L225 Difference]: With dead ends: 6256 [2020-09-25 04:31:55,613 INFO L226 Difference]: Without dead ends: 3851 [2020-09-25 04:31:55,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2020-09-25 04:31:55,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3404. [2020-09-25 04:31:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-09-25 04:31:55,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4333 transitions. [2020-09-25 04:31:55,718 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4333 transitions. Word has length 150 [2020-09-25 04:31:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:55,718 INFO L479 AbstractCegarLoop]: Abstraction has 3404 states and 4333 transitions. [2020-09-25 04:31:55,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4333 transitions. [2020-09-25 04:31:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 04:31:55,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:55,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:55,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:55,722 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:55,723 INFO L82 PathProgramCache]: Analyzing trace with hash -797814232, now seen corresponding path program 1 times [2020-09-25 04:31:55,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:55,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217121551] [2020-09-25 04:31:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:55,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:56,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:57,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 04:32:00,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:32:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:32:00,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:32:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 04:32:00,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:32:00,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:32:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:00,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:00,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:32:00,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:32:00,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:00,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:32:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:32:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:32:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:00,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:01,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:32:01,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 04:32:01,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:32:01,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 04:32:01,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:32:01,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:32:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:32:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:32:01,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:32:01,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:32:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:32:01,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217121551] [2020-09-25 04:32:01,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:32:01,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:32:01,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622040710] [2020-09-25 04:32:01,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:32:01,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:32:01,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:32:01,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:32:01,114 INFO L87 Difference]: Start difference. First operand 3404 states and 4333 transitions. Second operand 5 states. [2020-09-25 04:32:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:05,166 INFO L93 Difference]: Finished difference Result 7725 states and 10030 transitions. [2020-09-25 04:32:05,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:32:05,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 04:32:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:05,193 INFO L225 Difference]: With dead ends: 7725 [2020-09-25 04:32:05,193 INFO L226 Difference]: Without dead ends: 4338 [2020-09-25 04:32:05,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:32:05,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4338 states. [2020-09-25 04:32:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4338 to 4278. [2020-09-25 04:32:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4278 states. [2020-09-25 04:32:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 5369 transitions. [2020-09-25 04:32:05,333 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 5369 transitions. Word has length 159 [2020-09-25 04:32:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:05,334 INFO L479 AbstractCegarLoop]: Abstraction has 4278 states and 5369 transitions. [2020-09-25 04:32:05,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:32:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 5369 transitions. [2020-09-25 04:32:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 04:32:05,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:05,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:32:05,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:32:05,340 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash -551177150, now seen corresponding path program 1 times [2020-09-25 04:32:05,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:05,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191476632] [2020-09-25 04:32:05,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:05,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:05,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking...