/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:28,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:28,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:28,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:28,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:28,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:28,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:28,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:28,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:28,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:28,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:28,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:28,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:28,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:28,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:28,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:28,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:28,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:28,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:28,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:28,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:28,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:28,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:28,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:28,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:28,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:28,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:28,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:28,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:28,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:28,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:28,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:28,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:28,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:28,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:28,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:28,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:28,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:28,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:28,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:28,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:28,861 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 09:01:28,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:28,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:28,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:28,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:28,913 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:28,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:28,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:28,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:28,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:28,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:28,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:28,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:28,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:28,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:28,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:28,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:28,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:28,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:28,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:28,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:28,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:28,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:28,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:28,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:28,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:28,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:28,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:28,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:28,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:28,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:01:29,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:29,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:29,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:29,436 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:29,436 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:29,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 09:01:29,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c082ff3f2/f9451ae7678a4f7a92f56a06d62273ab/FLAG14308074f [2020-09-25 09:01:30,240 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:30,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 09:01:30,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c082ff3f2/f9451ae7678a4f7a92f56a06d62273ab/FLAG14308074f [2020-09-25 09:01:30,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c082ff3f2/f9451ae7678a4f7a92f56a06d62273ab [2020-09-25 09:01:30,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:30,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:30,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:30,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:30,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:30,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:30" (1/1) ... [2020-09-25 09:01:30,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2caf49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:30, skipping insertion in model container [2020-09-25 09:01:30,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:30" (1/1) ... [2020-09-25 09:01:30,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:30,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:31,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:31,008 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:31,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:31,258 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:31,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31 WrapperNode [2020-09-25 09:01:31,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:31,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:31,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:31,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:31,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (1/1) ... [2020-09-25 09:01:31,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (1/1) ... [2020-09-25 09:01:31,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (1/1) ... [2020-09-25 09:01:31,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (1/1) ... [2020-09-25 09:01:31,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (1/1) ... [2020-09-25 09:01:31,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (1/1) ... [2020-09-25 09:01:31,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (1/1) ... [2020-09-25 09:01:31,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:31,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:31,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:31,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:31,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (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 09:01:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:31,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:31,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:32,797 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:32,797 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:32,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:32 BoogieIcfgContainer [2020-09-25 09:01:32,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:32,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:32,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:32,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:32,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:30" (1/3) ... [2020-09-25 09:01:32,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:32, skipping insertion in model container [2020-09-25 09:01:32,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:31" (2/3) ... [2020-09-25 09:01:32,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199be726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:32, skipping insertion in model container [2020-09-25 09:01:32,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:32" (3/3) ... [2020-09-25 09:01:32,825 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 09:01:32,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:32,854 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:32,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:32,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:32,916 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:32,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:32,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:32,917 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:32,917 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:32,917 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:32,917 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:32,948 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 09:01:32,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:32,972 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] [2020-09-25 09:01:32,972 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:32,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 09:01:32,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:32,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227973489] [2020-09-25 09:01:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:33,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:36,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 09:01:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 09:01:38,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:01:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 09:01:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:38,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:38,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:38,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:38,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:01:38,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:38,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:38,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:38,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:38,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:38,624 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 09:01:38,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227973489] [2020-09-25 09:01:38,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:38,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:38,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585281742] [2020-09-25 09:01:38,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:38,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:38,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:38,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:38,659 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:01:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:40,847 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:01:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:40,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 09:01:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:40,876 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:01:40,877 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:01:40,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:40,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:01:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:01:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:40,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:01:40,996 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 127 [2020-09-25 09:01:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:40,997 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:01:40,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:01:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 09:01:41,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:41,011 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] [2020-09-25 09:01:41,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:41,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1111410035, now seen corresponding path program 1 times [2020-09-25 09:01:41,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:41,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694529229] [2020-09-25 09:01:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 09:01:46,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:01:46,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 09:01:46,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:01:46,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 09:01:46,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:46,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:46,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:46,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:01:46,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:46,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:46,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:46,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:46,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:46,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 09:01:46,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:46,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:01:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:46,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694529229] [2020-09-25 09:01:46,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:46,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:01:46,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398347990] [2020-09-25 09:01:46,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:46,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:46,323 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 09:01:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:48,767 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 09:01:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:48,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 09:01:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:48,782 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 09:01:48,782 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 09:01:48,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 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 09:01:48,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 09:01:48,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 09:01:48,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 09:01:48,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1174 transitions. [2020-09-25 09:01:48,864 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1174 transitions. Word has length 148 [2020-09-25 09:01:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:48,865 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1174 transitions. [2020-09-25 09:01:48,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:48,865 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1174 transitions. [2020-09-25 09:01:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 09:01:48,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:48,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:48,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:48,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:48,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 09:01:48,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:48,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751144290] [2020-09-25 09:01:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:53,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:53,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:53,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 09:01:53,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:53,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:01:53,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:53,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:53,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:53,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:01:53,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:01:53,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:54,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:54,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:54,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:01:54,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:54,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:54,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:54,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:54,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:01:54,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 09:01:54,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:54,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:54,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:54,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751144290] [2020-09-25 09:01:54,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:54,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:01:54,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655895323] [2020-09-25 09:01:54,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:54,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:54,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:54,286 INFO L87 Difference]: Start difference. First operand 966 states and 1174 transitions. Second operand 8 states. [2020-09-25 09:01:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:57,539 INFO L93 Difference]: Finished difference Result 3167 states and 4133 transitions. [2020-09-25 09:01:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:01:57,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 09:01:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:57,553 INFO L225 Difference]: With dead ends: 3167 [2020-09-25 09:01:57,554 INFO L226 Difference]: Without dead ends: 2225 [2020-09-25 09:01:57,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:01:57,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2020-09-25 09:01:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2068. [2020-09-25 09:01:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-09-25 09:01:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2599 transitions. [2020-09-25 09:01:57,664 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2599 transitions. Word has length 149 [2020-09-25 09:01:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:57,664 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2599 transitions. [2020-09-25 09:01:57,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2599 transitions. [2020-09-25 09:01:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:01:57,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:57,677 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:01:57,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:57,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:57,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:57,678 INFO L82 PathProgramCache]: Analyzing trace with hash -2031815638, now seen corresponding path program 1 times [2020-09-25 09:01:57,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:57,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437370919] [2020-09-25 09:01:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:01,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:02,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 09:02:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:02:02,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:02,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 09:02:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:02:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:02,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:02:02,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:02,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:02:02,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:02,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:02,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:02,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:02,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:02:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:02,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:02:02,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:02,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:02:02,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:02,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:02,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 09:02:02,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:02,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 09:02:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:02,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:02,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:02:02,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:02,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 09:02:02,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:02,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:02:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:02:03,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437370919] [2020-09-25 09:02:03,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:03,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:02:03,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852502593] [2020-09-25 09:02:03,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:02:03,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:03,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:02:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:02:03,080 INFO L87 Difference]: Start difference. First operand 2068 states and 2599 transitions. Second operand 8 states. [2020-09-25 09:02:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:05,184 INFO L93 Difference]: Finished difference Result 5410 states and 6930 transitions. [2020-09-25 09:02:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:02:05,185 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 09:02:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:05,206 INFO L225 Difference]: With dead ends: 5410 [2020-09-25 09:02:05,206 INFO L226 Difference]: Without dead ends: 3366 [2020-09-25 09:02:05,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:02:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2020-09-25 09:02:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 2650. [2020-09-25 09:02:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2020-09-25 09:02:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3380 transitions. [2020-09-25 09:02:05,331 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3380 transitions. Word has length 165 [2020-09-25 09:02:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:05,332 INFO L479 AbstractCegarLoop]: Abstraction has 2650 states and 3380 transitions. [2020-09-25 09:02:05,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:02:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3380 transitions. [2020-09-25 09:02:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 09:02:05,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:05,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:02:05,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:02:05,349 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash -531650440, now seen corresponding path program 1 times [2020-09-25 09:02:05,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:05,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995022071] [2020-09-25 09:02:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:07,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:08,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:10,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 09:02:10,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:02:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:02:10,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:10,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 09:02:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:02:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:02:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:10,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:10,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:02:10,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:02:10,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:10,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:02:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:02:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:02:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:02:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:10,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:10,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:02:10,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:02:10,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:10,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:02:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:02:10,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:02:10,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:02:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:10,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:02:10,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:02:10,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:02:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 09:02:10,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:02:10,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:02:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:02:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:02:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:02:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:02:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:02:10,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995022071] [2020-09-25 09:02:10,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:02:10,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:02:10,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26580986] [2020-09-25 09:02:10,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:02:10,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:02:10,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:02:10,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:02:10,637 INFO L87 Difference]: Start difference. First operand 2650 states and 3380 transitions. Second operand 7 states. [2020-09-25 09:02:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:02:12,824 INFO L93 Difference]: Finished difference Result 5616 states and 7218 transitions. [2020-09-25 09:02:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:02:12,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 09:02:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:02:12,843 INFO L225 Difference]: With dead ends: 5616 [2020-09-25 09:02:12,843 INFO L226 Difference]: Without dead ends: 2990 [2020-09-25 09:02:12,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:02:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2020-09-25 09:02:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2795. [2020-09-25 09:02:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-09-25 09:02:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3538 transitions. [2020-09-25 09:02:12,940 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3538 transitions. Word has length 170 [2020-09-25 09:02:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:02:12,940 INFO L479 AbstractCegarLoop]: Abstraction has 2795 states and 3538 transitions. [2020-09-25 09:02:12,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:02:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3538 transitions. [2020-09-25 09:02:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 09:02:12,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:02:12,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:02:12,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:02:12,951 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:02:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:02:12,952 INFO L82 PathProgramCache]: Analyzing trace with hash 2069482775, now seen corresponding path program 1 times [2020-09-25 09:02:12,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:02:12,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819825057] [2020-09-25 09:02:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:02:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:02:13,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:02:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking...