/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=NARROWEST --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/Problem02_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:13:00,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:13:00,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:13:00,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:13:00,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:13:00,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:13:00,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:13:00,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:13:00,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:13:00,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:13:00,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:13:00,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:13:00,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:13:00,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:13:00,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:13:00,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:13:00,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:13:00,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:13:00,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:13:00,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:13:00,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:13:00,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:13:00,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:13:00,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:13:00,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:13:00,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:13:00,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:13:00,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:13:00,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:13:00,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:13:00,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:13:00,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:13:00,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:13:00,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:13:00,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:13:00,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:13:00,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:13:00,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:13:00,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:13:00,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:13:00,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:13:00,425 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 02:13:00,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:13:00,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:13:00,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:13:00,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:13:00,472 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:13:00,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:13:00,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:13:00,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:13:00,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:13:00,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:13:00,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:13:00,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:13:00,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:13:00,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:13:00,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:13:00,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:13:00,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:13:00,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:13:00,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:13:00,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:13:00,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:13:00,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:13:00,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:13:00,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:13:00,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:13:00,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:13:00,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:13:00,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:13:00,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:13:00,479 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:13:00,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:13:00,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:13:00,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:13:00,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:13:00,985 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:13:00,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 02:13:01,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2e17ccc5/478835b701774a159650f81203443678/FLAG90f0604ce [2020-09-25 02:13:01,722 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:13:01,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 02:13:01,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2e17ccc5/478835b701774a159650f81203443678/FLAG90f0604ce [2020-09-25 02:13:01,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2e17ccc5/478835b701774a159650f81203443678 [2020-09-25 02:13:01,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:13:01,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:13:01,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:13:01,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:13:01,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:13:01,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:13:01" (1/1) ... [2020-09-25 02:13:01,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:01, skipping insertion in model container [2020-09-25 02:13:01,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:13:01" (1/1) ... [2020-09-25 02:13:02,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:13:02,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:13:02,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:13:02,520 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:13:02,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:13:02,790 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:13:02,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02 WrapperNode [2020-09-25 02:13:02,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:13:02,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:13:02,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:13:02,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:13:02,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (1/1) ... [2020-09-25 02:13:02,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (1/1) ... [2020-09-25 02:13:02,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (1/1) ... [2020-09-25 02:13:02,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (1/1) ... [2020-09-25 02:13:02,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (1/1) ... [2020-09-25 02:13:02,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (1/1) ... [2020-09-25 02:13:02,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (1/1) ... [2020-09-25 02:13:02,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:13:02,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:13:02,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:13:02,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:13:02,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (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 02:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:13:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:13:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:13:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:13:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:13:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:13:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:13:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:13:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:13:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:13:04,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:13:04,302 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:13:04,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:13:04 BoogieIcfgContainer [2020-09-25 02:13:04,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:13:04,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:13:04,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:13:04,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:13:04,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:13:01" (1/3) ... [2020-09-25 02:13:04,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:13:04, skipping insertion in model container [2020-09-25 02:13:04,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:13:02" (2/3) ... [2020-09-25 02:13:04,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:13:04, skipping insertion in model container [2020-09-25 02:13:04,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:13:04" (3/3) ... [2020-09-25 02:13:04,324 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 02:13:04,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:13:04,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:13:04,391 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:13:04,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:13:04,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:13:04,427 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:13:04,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:13:04,428 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:13:04,428 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:13:04,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:13:04,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:13:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 02:13:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 02:13:04,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:13:04,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:13:04,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:13:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:13:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 02:13:04,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:13:04,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 02:13:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:13:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:05,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:05,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:06,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:09,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:09,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 02:13:09,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:13:09,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 02:13:09,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:13:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 02:13:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 02:13:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:13:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:13:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:10,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:10,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:13:10,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 02:13:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:13:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:13:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:13:10,987 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 02:13:10,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 02:13:10,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:13:10,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 02:13:10,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124815294] [2020-09-25 02:13:11,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:13:11,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:13:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:13:11,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:13:11,041 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 17 states. [2020-09-25 02:13:11,378 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-09-25 02:13:11,678 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-25 02:13:11,941 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-25 02:13:12,237 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-09-25 02:13:12,537 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-09-25 02:13:12,776 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-09-25 02:13:13,189 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-25 02:13:13,439 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-09-25 02:13:13,751 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-09-25 02:13:14,901 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-09-25 02:13:15,115 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-09-25 02:13:15,445 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-25 02:13:16,185 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-09-25 02:13:16,637 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-09-25 02:13:16,840 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-25 02:13:17,789 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-25 02:13:18,239 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-25 02:13:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:13:20,804 INFO L93 Difference]: Finished difference Result 1860 states and 2652 transitions. [2020-09-25 02:13:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-25 02:13:20,806 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 164 [2020-09-25 02:13:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:13:20,839 INFO L225 Difference]: With dead ends: 1860 [2020-09-25 02:13:20,839 INFO L226 Difference]: Without dead ends: 1230 [2020-09-25 02:13:20,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=470, Invalid=1252, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 02:13:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-09-25 02:13:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1070. [2020-09-25 02:13:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-09-25 02:13:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1287 transitions. [2020-09-25 02:13:20,991 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1287 transitions. Word has length 164 [2020-09-25 02:13:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:13:20,992 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1287 transitions. [2020-09-25 02:13:20,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:13:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1287 transitions. [2020-09-25 02:13:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 02:13:21,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:13:21,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:13:21,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:13:21,015 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:13:21,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:13:21,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1632286597, now seen corresponding path program 1 times [2020-09-25 02:13:21,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:13:21,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720083039] [2020-09-25 02:13:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:13:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:21,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:24,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:25,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:26,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 02:13:26,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:13:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 02:13:26,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 02:13:26,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:13:26,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 02:13:26,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:13:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:13:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:26,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:13:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:13:26,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:13:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:26,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:13:26,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:13:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:13:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:26,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:26,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 02:13:26,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:26,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 02:13:26,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:13:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:26,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 02:13:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:13:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:13:26,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720083039] [2020-09-25 02:13:26,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:13:26,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:13:26,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888873098] [2020-09-25 02:13:26,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:13:26,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:13:26,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:13:26,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:13:26,921 INFO L87 Difference]: Start difference. First operand 1070 states and 1287 transitions. Second operand 14 states. [2020-09-25 02:13:31,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:13:31,792 INFO L93 Difference]: Finished difference Result 3059 states and 4005 transitions. [2020-09-25 02:13:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:13:31,792 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2020-09-25 02:13:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:13:31,807 INFO L225 Difference]: With dead ends: 3059 [2020-09-25 02:13:31,808 INFO L226 Difference]: Without dead ends: 2069 [2020-09-25 02:13:31,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=247, Invalid=455, Unknown=0, NotChecked=0, Total=702 [2020-09-25 02:13:31,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-09-25 02:13:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2059. [2020-09-25 02:13:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-09-25 02:13:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2432 transitions. [2020-09-25 02:13:31,910 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2432 transitions. Word has length 186 [2020-09-25 02:13:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:13:31,911 INFO L479 AbstractCegarLoop]: Abstraction has 2059 states and 2432 transitions. [2020-09-25 02:13:31,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:13:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2432 transitions. [2020-09-25 02:13:31,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 02:13:31,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:13:31,923 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:13:31,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:13:31,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:13:31,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:13:31,924 INFO L82 PathProgramCache]: Analyzing trace with hash 749242086, now seen corresponding path program 1 times [2020-09-25 02:13:31,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:13:31,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164883075] [2020-09-25 02:13:31,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:13:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:31,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:32,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:36,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:36,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 02:13:36,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:13:36,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 02:13:36,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:13:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 02:13:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 02:13:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:13:37,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:13:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:37,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:37,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:13:37,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:13:37,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:13:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:37,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:13:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:13:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:13:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:37,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:37,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:13:37,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:13:37,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:13:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:37,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 02:13:37,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:13:37,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:13:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:37,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:37,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:13:37,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 02:13:37,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:13:37,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:13:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:13:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:13:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:13:37,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164883075] [2020-09-25 02:13:37,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:13:37,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:13:37,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837789718] [2020-09-25 02:13:37,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:13:37,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:13:37,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:13:37,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:13:37,279 INFO L87 Difference]: Start difference. First operand 2059 states and 2432 transitions. Second operand 7 states. [2020-09-25 02:13:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:13:39,765 INFO L93 Difference]: Finished difference Result 4999 states and 6159 transitions. [2020-09-25 02:13:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:13:39,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-09-25 02:13:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:13:39,790 INFO L225 Difference]: With dead ends: 4999 [2020-09-25 02:13:39,790 INFO L226 Difference]: Without dead ends: 3020 [2020-09-25 02:13:39,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 02:13:39,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2020-09-25 02:13:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 3012. [2020-09-25 02:13:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3012 states. [2020-09-25 02:13:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 3585 transitions. [2020-09-25 02:13:39,907 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 3585 transitions. Word has length 199 [2020-09-25 02:13:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:13:39,907 INFO L479 AbstractCegarLoop]: Abstraction has 3012 states and 3585 transitions. [2020-09-25 02:13:39,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:13:39,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 3585 transitions. [2020-09-25 02:13:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 02:13:39,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:13:39,922 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:39,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:13:39,924 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:13:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:13:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1355067259, now seen corresponding path program 1 times [2020-09-25 02:13:39,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:13:39,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430115190] [2020-09-25 02:13:39,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:13:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:40,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:40,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:41,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:43,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:45,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:45,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 02:13:45,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:13:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-09-25 02:13:45,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:13:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-25 02:13:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 02:13:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:13:45,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:13:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:45,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:13:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:13:45,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:13:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:45,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:13:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:13:45,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:13:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:45,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:45,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:45,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 02:13:45,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:45,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:13:45,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:13:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:45,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:13:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:13:45,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 02:13:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:13:45,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:13:45,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:13:45,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 02:13:45,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:13:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 02:13:45,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:13:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:13:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:13:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:13:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:13:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 02:13:45,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430115190] [2020-09-25 02:13:45,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:13:45,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 02:13:45,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902133788] [2020-09-25 02:13:45,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 02:13:45,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:13:45,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 02:13:45,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:13:45,833 INFO L87 Difference]: Start difference. First operand 3012 states and 3585 transitions. Second operand 15 states. [2020-09-25 02:13:48,795 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 02:13:50,061 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 02:13:51,361 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 80