/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:24:03,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:24:03,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:24:03,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:24:03,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:24:03,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:24:03,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:24:03,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:24:03,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:24:03,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:24:03,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:24:03,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:24:03,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:24:03,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:24:03,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:24:03,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:24:03,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:24:03,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:24:03,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:24:03,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:24:03,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:24:03,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:24:03,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:24:03,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:24:03,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:24:03,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:24:03,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:24:03,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:24:03,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:24:03,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:24:03,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:24:03,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:24:03,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:24:03,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:24:03,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:24:03,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:24:03,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:24:03,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:24:03,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:24:03,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:24:03,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:24:03,345 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 [2020-09-24 18:24:03,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:24:03,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:24:03,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:24:03,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:24:03,403 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:24:03,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:24:03,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:24:03,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:24:03,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:24:03,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:24:03,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:24:03,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:24:03,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:24:03,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:24:03,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:24:03,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:24:03,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:24:03,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:24:03,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:24:03,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:24:03,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:24:03,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:24:03,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:24:03,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:24:03,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:24:03,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:24:03,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:24:03,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:24:03,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:24:03,410 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:24:03,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:24:03,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:24:03,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:24:03,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:24:03,918 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:24:03,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-24 18:24:04,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2917592/32cf26d942244f56b75ea811efdce87d/FLAGbf164d697 [2020-09-24 18:24:04,671 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:24:04,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-24 18:24:04,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2917592/32cf26d942244f56b75ea811efdce87d/FLAGbf164d697 [2020-09-24 18:24:04,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2917592/32cf26d942244f56b75ea811efdce87d [2020-09-24 18:24:04,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:24:04,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:24:04,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:04,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:24:04,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:24:04,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:04" (1/1) ... [2020-09-24 18:24:04,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:04, skipping insertion in model container [2020-09-24 18:24:04,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:24:04" (1/1) ... [2020-09-24 18:24:04,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:24:05,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:24:05,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:05,490 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:24:05,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:24:05,807 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:24:05,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05 WrapperNode [2020-09-24 18:24:05,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:24:05,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:24:05,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:24:05,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:24:05,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (1/1) ... [2020-09-24 18:24:05,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (1/1) ... [2020-09-24 18:24:05,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (1/1) ... [2020-09-24 18:24:05,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (1/1) ... [2020-09-24 18:24:05,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (1/1) ... [2020-09-24 18:24:05,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (1/1) ... [2020-09-24 18:24:05,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (1/1) ... [2020-09-24 18:24:05,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:24:05,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:24:05,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:24:05,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:24:05,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (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 [2020-09-24 18:24:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:24:06,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:24:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:24:06,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:24:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:24:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:24:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:24:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:24:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:24:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:24:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:24:07,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:24:07,727 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:24:07,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:07 BoogieIcfgContainer [2020-09-24 18:24:07,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:24:07,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:24:07,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:24:07,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:24:07,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:24:04" (1/3) ... [2020-09-24 18:24:07,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:07, skipping insertion in model container [2020-09-24 18:24:07,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:24:05" (2/3) ... [2020-09-24 18:24:07,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:24:07, skipping insertion in model container [2020-09-24 18:24:07,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:24:07" (3/3) ... [2020-09-24 18:24:07,746 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-24 18:24:07,758 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:24:07,769 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:24:07,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:24:07,827 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:24:07,827 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:24:07,827 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:24:07,827 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:24:07,827 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:24:07,828 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:24:07,828 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:24:07,828 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:24:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:24:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 18:24:07,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:07,880 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] [2020-09-24 18:24:07,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-24 18:24:07,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:07,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-24 18:24:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:08,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:08,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:08,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:24:08,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:24:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-09-24 18:24:08,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:24:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:24:08,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:24:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:24:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:09,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:09,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:09,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:09,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:09,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 18:24:09,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:09,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:24:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:09,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-24 18:24:09,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:24:09,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:24:09,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225624636] [2020-09-24 18:24:09,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:09,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:09,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:09,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:09,157 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 18:24:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:12,188 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-24 18:24:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:24:12,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-24 18:24:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:12,217 INFO L225 Difference]: With dead ends: 1352 [2020-09-24 18:24:12,218 INFO L226 Difference]: Without dead ends: 806 [2020-09-24 18:24:12,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:24:12,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-24 18:24:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-24 18:24:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-24 18:24:12,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-24 18:24:12,349 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 71 [2020-09-24 18:24:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:12,350 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-24 18:24:12,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-24 18:24:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 18:24:12,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:12,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:12,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:24:12,361 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:12,361 INFO L82 PathProgramCache]: Analyzing trace with hash 2032396842, now seen corresponding path program 1 times [2020-09-24 18:24:12,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:12,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284865125] [2020-09-24 18:24:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:12,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:13,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:14,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:17,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 18:24:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:24:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:24:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 18:24:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:24:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:17,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:17,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:17,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:24:17,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:17,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:17,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:17,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:17,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:17,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:17,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:17,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:17,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 18:24:17,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:24:17,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 18:24:17,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:17,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284865125] [2020-09-24 18:24:17,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:17,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:17,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589147700] [2020-09-24 18:24:17,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:17,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:17,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:17,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:17,809 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 5 states. [2020-09-24 18:24:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:19,748 INFO L93 Difference]: Finished difference Result 1762 states and 2252 transitions. [2020-09-24 18:24:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:19,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 18:24:19,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:19,756 INFO L225 Difference]: With dead ends: 1762 [2020-09-24 18:24:19,756 INFO L226 Difference]: Without dead ends: 1050 [2020-09-24 18:24:19,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-24 18:24:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1030. [2020-09-24 18:24:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-09-24 18:24:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1226 transitions. [2020-09-24 18:24:19,826 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1226 transitions. Word has length 154 [2020-09-24 18:24:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:19,828 INFO L479 AbstractCegarLoop]: Abstraction has 1030 states and 1226 transitions. [2020-09-24 18:24:19,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1226 transitions. [2020-09-24 18:24:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 18:24:19,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:19,842 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:19,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:24:19,843 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:19,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:19,843 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-24 18:24:19,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:19,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190322893] [2020-09-24 18:24:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:20,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:24,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 18:24:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:24:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:24:24,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:24:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:24:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:24,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:24,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:24,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:24,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:24,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:24,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:24,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:25,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:24:25,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 18:24:25,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:25,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:25,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:24:25,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:25,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190322893] [2020-09-24 18:24:25,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:25,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:25,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144398730] [2020-09-24 18:24:25,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:25,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:25,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:25,177 INFO L87 Difference]: Start difference. First operand 1030 states and 1226 transitions. Second operand 5 states. [2020-09-24 18:24:26,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:26,942 INFO L93 Difference]: Finished difference Result 1640 states and 2035 transitions. [2020-09-24 18:24:26,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:26,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-24 18:24:26,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:26,954 INFO L225 Difference]: With dead ends: 1640 [2020-09-24 18:24:26,954 INFO L226 Difference]: Without dead ends: 1638 [2020-09-24 18:24:26,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2020-09-24 18:24:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1188. [2020-09-24 18:24:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-24 18:24:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1471 transitions. [2020-09-24 18:24:26,999 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1471 transitions. Word has length 160 [2020-09-24 18:24:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:27,000 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1471 transitions. [2020-09-24 18:24:27,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:27,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1471 transitions. [2020-09-24 18:24:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 18:24:27,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:27,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:24:27,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:24:27,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:27,006 INFO L82 PathProgramCache]: Analyzing trace with hash -517211058, now seen corresponding path program 1 times [2020-09-24 18:24:27,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:27,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313591025] [2020-09-24 18:24:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:27,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-24 18:24:32,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:32,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 18:24:32,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-09-24 18:24:32,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 18:24:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:32,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:24:32,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:32,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:32,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:32,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:32,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 18:24:32,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 18:24:32,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-24 18:24:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:24:32,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313591025] [2020-09-24 18:24:32,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:32,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:24:32,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877131677] [2020-09-24 18:24:32,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:24:32,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:32,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:24:32,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:24:32,571 INFO L87 Difference]: Start difference. First operand 1188 states and 1471 transitions. Second operand 5 states. [2020-09-24 18:24:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:34,627 INFO L93 Difference]: Finished difference Result 2715 states and 3481 transitions. [2020-09-24 18:24:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:24:34,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-09-24 18:24:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:34,645 INFO L225 Difference]: With dead ends: 2715 [2020-09-24 18:24:34,645 INFO L226 Difference]: Without dead ends: 1692 [2020-09-24 18:24:34,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:24:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2020-09-24 18:24:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1519. [2020-09-24 18:24:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2020-09-24 18:24:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1863 transitions. [2020-09-24 18:24:34,710 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1863 transitions. Word has length 203 [2020-09-24 18:24:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:34,713 INFO L479 AbstractCegarLoop]: Abstraction has 1519 states and 1863 transitions. [2020-09-24 18:24:34,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:24:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1863 transitions. [2020-09-24 18:24:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-24 18:24:34,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:34,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:34,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:24:34,723 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:34,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1674500493, now seen corresponding path program 1 times [2020-09-24 18:24:34,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:34,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556120544] [2020-09-24 18:24:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:39,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:39,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-24 18:24:39,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:24:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 18:24:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-24 18:24:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 18:24:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:39,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:24:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:24:40,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:24:40,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 18:24:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:40,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:24:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:40,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:40,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:24:40,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:40,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 18:24:40,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:40,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:24:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:40,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556120544] [2020-09-24 18:24:40,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:40,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:24:40,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574703252] [2020-09-24 18:24:40,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:24:40,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:40,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:24:40,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:24:40,582 INFO L87 Difference]: Start difference. First operand 1519 states and 1863 transitions. Second operand 8 states. [2020-09-24 18:24:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:24:43,584 INFO L93 Difference]: Finished difference Result 3982 states and 5318 transitions. [2020-09-24 18:24:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:24:43,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-09-24 18:24:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:24:43,603 INFO L225 Difference]: With dead ends: 3982 [2020-09-24 18:24:43,604 INFO L226 Difference]: Without dead ends: 2628 [2020-09-24 18:24:43,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:24:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2020-09-24 18:24:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2594. [2020-09-24 18:24:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2594 states. [2020-09-24 18:24:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3414 transitions. [2020-09-24 18:24:43,720 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3414 transitions. Word has length 252 [2020-09-24 18:24:43,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:24:43,721 INFO L479 AbstractCegarLoop]: Abstraction has 2594 states and 3414 transitions. [2020-09-24 18:24:43,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:24:43,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3414 transitions. [2020-09-24 18:24:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-24 18:24:43,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:24:43,730 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:24:43,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:24:43,731 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:24:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:24:43,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1488757271, now seen corresponding path program 1 times [2020-09-24 18:24:43,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:24:43,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993131745] [2020-09-24 18:24:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:24:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:43,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:48,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:48,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-24 18:24:48,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:24:48,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-24 18:24:48,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:24:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 18:24:48,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:24:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:24:48,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:24:48,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:24:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:48,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:24:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:24:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:24:49,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:24:49,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:24:49,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:24:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:24:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:24:49,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:24:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:24:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:24:49,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:24:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 18:24:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:24:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 18:24:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:24:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:24:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:24:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 18:24:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:24:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:24:49,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993131745] [2020-09-24 18:24:49,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:24:49,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:24:49,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12746036] [2020-09-24 18:24:49,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:24:49,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:24:49,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:24:49,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:24:49,647 INFO L87 Difference]: Start difference. First operand 2594 states and 3414 transitions. Second operand 8 states.