/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=0.6 --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/Problem01_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:14,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:14,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:14,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:14,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:14,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:14,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:14,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:14,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:14,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:14,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:14,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:14,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:14,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:14,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:14,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:14,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:14,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:14,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:14,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:14,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:14,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:14,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:14,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:14,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:14,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:14,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:14,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:14,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:14,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:14,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:14,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:14,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:14,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:14,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:14,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:14,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:14,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:14,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:14,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:14,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:14,441 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 06:42:14,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:14,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:14,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:14,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:14,469 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:14,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:14,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:14,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:14,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:14,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:14,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:14,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:14,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:14,471 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:14,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:14,472 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:14,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:14,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:14,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:14,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:14,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:14,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:14,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:14,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:14,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:14,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:14,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:14,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:14,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:14,475 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:14,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:14,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:14,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:14,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:14,963 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:14,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 06:42:15,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6257145b/9cefad039aaf4a3a99d6ed2f11ceef21/FLAG6ef7a0d25 [2020-09-25 06:42:15,709 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:15,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-25 06:42:15,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6257145b/9cefad039aaf4a3a99d6ed2f11ceef21/FLAG6ef7a0d25 [2020-09-25 06:42:15,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6257145b/9cefad039aaf4a3a99d6ed2f11ceef21 [2020-09-25 06:42:15,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:15,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:15,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:15,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:15,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:15,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:15" (1/1) ... [2020-09-25 06:42:15,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:15, skipping insertion in model container [2020-09-25 06:42:15,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:15" (1/1) ... [2020-09-25 06:42:15,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:16,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:16,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:16,552 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:16,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:16,764 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:16,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16 WrapperNode [2020-09-25 06:42:16,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:16,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:16,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:16,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:16,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (1/1) ... [2020-09-25 06:42:16,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (1/1) ... [2020-09-25 06:42:16,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (1/1) ... [2020-09-25 06:42:16,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (1/1) ... [2020-09-25 06:42:16,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (1/1) ... [2020-09-25 06:42:16,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (1/1) ... [2020-09-25 06:42:16,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (1/1) ... [2020-09-25 06:42:16,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:16,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:16,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:16,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:16,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (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 06:42:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:18,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:18,299 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:18,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:18 BoogieIcfgContainer [2020-09-25 06:42:18,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:18,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:18,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:18,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:18,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:15" (1/3) ... [2020-09-25 06:42:18,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:18, skipping insertion in model container [2020-09-25 06:42:18,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:16" (2/3) ... [2020-09-25 06:42:18,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:18, skipping insertion in model container [2020-09-25 06:42:18,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:18" (3/3) ... [2020-09-25 06:42:18,328 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-25 06:42:18,340 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:18,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:18,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:18,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:18,415 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:18,415 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:18,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:18,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:18,416 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:18,416 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:18,416 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 06:42:18,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:18,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:18,498 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-25 06:42:18,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:18,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 06:42:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:19,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:21,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:23,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:42:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:42:23,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:23,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:42:23,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 06:42:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:42:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:24,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:24,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:24,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:42:24,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:24,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:24,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:42:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:24,108 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 06:42:24,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 06:42:24,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:24,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:24,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383784077] [2020-09-25 06:42:24,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:24,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:24,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:24,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:24,139 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:42:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:26,207 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:42:26,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:42:26,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 06:42:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:26,245 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:42:26,245 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:42:26,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:42:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:42:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:42:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:42:26,366 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 131 [2020-09-25 06:42:26,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:26,367 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:42:26,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:42:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:42:26,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 06:42:26,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:26,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:26,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:42:26,374 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:26,375 INFO L82 PathProgramCache]: Analyzing trace with hash 926344477, now seen corresponding path program 1 times [2020-09-25 06:42:26,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:26,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822268467] [2020-09-25 06:42:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:26,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:26,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:31,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 06:42:31,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:31,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:42:31,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:31,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:42:31,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:42:31,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:31,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:31,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:31,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:31,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:42:31,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:31,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:31,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:31,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:31,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:31,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:31,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:31,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:42:31,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:31,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:31,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822268467] [2020-09-25 06:42:31,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:31,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:42:31,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272311865] [2020-09-25 06:42:31,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:31,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:31,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:31,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:31,736 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 06:42:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:34,117 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 06:42:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:34,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 06:42:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:34,126 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 06:42:34,126 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 06:42:34,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 06:42:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 06:42:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 06:42:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1175 transitions. [2020-09-25 06:42:34,180 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1175 transitions. Word has length 152 [2020-09-25 06:42:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:34,181 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1175 transitions. [2020-09-25 06:42:34,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1175 transitions. [2020-09-25 06:42:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 06:42:34,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:34,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:34,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:42:34,187 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:34,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:34,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1561438327, now seen corresponding path program 1 times [2020-09-25 06:42:34,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:34,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338411815] [2020-09-25 06:42:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:36,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:37,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:39,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 06:42:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:42:39,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:42:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:39,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:39,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:42:39,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:39,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:42:39,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:39,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:39,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:39,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:39,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:42:39,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:39,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:39,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:39,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:42:39,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:39,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:39,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:42:39,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:42:39,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:39,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:42:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:39,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338411815] [2020-09-25 06:42:39,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:39,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:42:39,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793900479] [2020-09-25 06:42:39,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:39,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:39,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:39,537 INFO L87 Difference]: Start difference. First operand 966 states and 1175 transitions. Second operand 7 states. [2020-09-25 06:42:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:41,866 INFO L93 Difference]: Finished difference Result 2712 states and 3474 transitions. [2020-09-25 06:42:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:42:41,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 06:42:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:41,878 INFO L225 Difference]: With dead ends: 2712 [2020-09-25 06:42:41,878 INFO L226 Difference]: Without dead ends: 1770 [2020-09-25 06:42:41,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2020-09-25 06:42:41,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1637. [2020-09-25 06:42:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-25 06:42:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2020 transitions. [2020-09-25 06:42:41,991 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2020 transitions. Word has length 153 [2020-09-25 06:42:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:41,992 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2020 transitions. [2020-09-25 06:42:41,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2020 transitions. [2020-09-25 06:42:42,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 06:42:42,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:42,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:42,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:42:42,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2020064762, now seen corresponding path program 1 times [2020-09-25 06:42:42,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:42,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967820054] [2020-09-25 06:42:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:43,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:47,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 06:42:47,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:42:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:42:47,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:47,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 06:42:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 06:42:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:47,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:47,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:47,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:42:47,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:47,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:47,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:47,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:47,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 06:42:47,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 06:42:47,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:47,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:42:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:42:47,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967820054] [2020-09-25 06:42:47,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:47,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:42:47,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335275606] [2020-09-25 06:42:47,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:42:47,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:47,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:42:47,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:42:47,469 INFO L87 Difference]: Start difference. First operand 1637 states and 2020 transitions. Second operand 5 states. [2020-09-25 06:42:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:49,452 INFO L93 Difference]: Finished difference Result 4469 states and 5737 transitions. [2020-09-25 06:42:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:42:49,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 06:42:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:49,469 INFO L225 Difference]: With dead ends: 4469 [2020-09-25 06:42:49,469 INFO L226 Difference]: Without dead ends: 2856 [2020-09-25 06:42:49,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 06:42:49,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2020-09-25 06:42:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2507. [2020-09-25 06:42:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2507 states. [2020-09-25 06:42:49,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3127 transitions. [2020-09-25 06:42:49,567 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3127 transitions. Word has length 178 [2020-09-25 06:42:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:49,568 INFO L479 AbstractCegarLoop]: Abstraction has 2507 states and 3127 transitions. [2020-09-25 06:42:49,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:42:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3127 transitions. [2020-09-25 06:42:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 06:42:49,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:49,579 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:49,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:42:49,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:49,580 INFO L82 PathProgramCache]: Analyzing trace with hash 727992105, now seen corresponding path program 1 times [2020-09-25 06:42:49,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:49,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947195418] [2020-09-25 06:42:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:50,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:51,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:54,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 06:42:54,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:42:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:42:54,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:54,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:42:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:42:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:54,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:54,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:42:54,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:54,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:42:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:42:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:42:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:54,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:42:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:42:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:54,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:42:54,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 06:42:54,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:54,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:42:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:42:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:42:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:54,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947195418] [2020-09-25 06:42:54,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:54,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:42:54,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749705117] [2020-09-25 06:42:54,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:42:54,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:54,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:42:54,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:42:54,989 INFO L87 Difference]: Start difference. First operand 2507 states and 3127 transitions. Second operand 7 states. [2020-09-25 06:42:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:57,861 INFO L93 Difference]: Finished difference Result 5701 states and 7476 transitions. [2020-09-25 06:42:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:42:57,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 06:42:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:57,884 INFO L225 Difference]: With dead ends: 5701 [2020-09-25 06:42:57,884 INFO L226 Difference]: Without dead ends: 3218 [2020-09-25 06:42:57,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:42:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2020-09-25 06:42:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 2976. [2020-09-25 06:42:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2976 states. [2020-09-25 06:42:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 3713 transitions. [2020-09-25 06:42:58,013 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 3713 transitions. Word has length 181 [2020-09-25 06:42:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:58,015 INFO L479 AbstractCegarLoop]: Abstraction has 2976 states and 3713 transitions. [2020-09-25 06:42:58,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:42:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 3713 transitions. [2020-09-25 06:42:58,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 06:42:58,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:58,027 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:58,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:42:58,028 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:58,029 INFO L82 PathProgramCache]: Analyzing trace with hash -807439965, now seen corresponding path program 1 times [2020-09-25 06:42:58,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:58,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856880931] [2020-09-25 06:42:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:58,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:03,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:03,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 06:43:03,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:03,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:43:03,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:03,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 06:43:03,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 06:43:03,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:03,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:03,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:43:03,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:03,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:03,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:03,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:43:03,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:03,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:03,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:03,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:03,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:43:03,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 06:43:03,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856880931] [2020-09-25 06:43:03,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:03,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:03,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063441738] [2020-09-25 06:43:03,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:03,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:03,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:03,323 INFO L87 Difference]: Start difference. First operand 2976 states and 3713 transitions. Second operand 5 states. [2020-09-25 06:43:05,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:05,421 INFO L93 Difference]: Finished difference Result 5957 states and 7442 transitions. [2020-09-25 06:43:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:05,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 06:43:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:05,437 INFO L225 Difference]: With dead ends: 5957 [2020-09-25 06:43:05,437 INFO L226 Difference]: Without dead ends: 3005 [2020-09-25 06:43:05,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 06:43:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states.