/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:13:23,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:13:23,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:13:23,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:13:23,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:13:23,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:13:23,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:13:23,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:23,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:23,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:23,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:23,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:23,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:23,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:23,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:23,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:23,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:23,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:23,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:23,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:23,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:23,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:23,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:23,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:23,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:23,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:23,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:23,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:23,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:23,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:23,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:23,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:23,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:23,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:23,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:23,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:23,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:23,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:23,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:23,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:23,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:23,921 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 10:13:23,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:23,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:23,948 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:23,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:23,948 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:23,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:23,949 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:23,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:23,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:23,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:23,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:23,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:23,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:23,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:23,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:23,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:23,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:23,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:23,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:23,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:23,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:23,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:23,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:23,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:23,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:23,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:23,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:23,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:23,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:23,954 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:13:24,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:24,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:24,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:24,425 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:24,425 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:24,426 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 10:13:24,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d2d7af9b/14e1c45b833d4e41ad3338741c099426/FLAG2631a87b9 [2020-09-25 10:13:25,266 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:25,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 10:13:25,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d2d7af9b/14e1c45b833d4e41ad3338741c099426/FLAG2631a87b9 [2020-09-25 10:13:25,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d2d7af9b/14e1c45b833d4e41ad3338741c099426 [2020-09-25 10:13:25,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:25,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:25,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:25,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:25,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:25,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:25" (1/1) ... [2020-09-25 10:13:25,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a765448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:25, skipping insertion in model container [2020-09-25 10:13:25,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:25" (1/1) ... [2020-09-25 10:13:25,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:25,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:26,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:26,084 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:26,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:26,437 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:26,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26 WrapperNode [2020-09-25 10:13:26,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:26,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:26,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:26,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:26,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:26,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:26,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:26,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:26,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (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 10:13:26,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:13:26,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:13:26,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:13:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:26,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:28,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:28,519 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:28,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:28 BoogieIcfgContainer [2020-09-25 10:13:28,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:28,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:28,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:28,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:28,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:25" (1/3) ... [2020-09-25 10:13:28,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c906006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:28, skipping insertion in model container [2020-09-25 10:13:28,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (2/3) ... [2020-09-25 10:13:28,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c906006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:28, skipping insertion in model container [2020-09-25 10:13:28,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:28" (3/3) ... [2020-09-25 10:13:28,541 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 10:13:28,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:28,566 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:28,590 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:28,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:28,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:28,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:28,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:28,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:28,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:28,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:28,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 10:13:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:13:28,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:28,701 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] [2020-09-25 10:13:28,701 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 10:13:28,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:28,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613601812] [2020-09-25 10:13:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:28,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:13:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-25 10:13:29,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:29,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:13:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:13:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:29,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:29,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:13:29,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:29,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:29,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:29,938 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 10:13:29,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613601812] [2020-09-25 10:13:29,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:29,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:29,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993929402] [2020-09-25 10:13:29,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:29,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:29,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:29,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:29,975 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 10:13:33,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:33,036 INFO L93 Difference]: Finished difference Result 1663 states and 2205 transitions. [2020-09-25 10:13:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:33,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 10:13:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:33,068 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 10:13:33,068 INFO L226 Difference]: Without dead ends: 911 [2020-09-25 10:13:33,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-09-25 10:13:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 891. [2020-09-25 10:13:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 10:13:33,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1043 transitions. [2020-09-25 10:13:33,211 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1043 transitions. Word has length 62 [2020-09-25 10:13:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:33,212 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1043 transitions. [2020-09-25 10:13:33,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1043 transitions. [2020-09-25 10:13:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:13:33,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:33,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:33,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:33,223 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:33,224 INFO L82 PathProgramCache]: Analyzing trace with hash 589777722, now seen corresponding path program 1 times [2020-09-25 10:13:33,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:33,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710568868] [2020-09-25 10:13:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:38,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:13:38,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 10:13:38,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:38,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:38,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 10:13:38,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:38,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:38,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:13:38,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:38,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:13:38,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 10:13:38,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:38,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 10:13:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:38,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710568868] [2020-09-25 10:13:38,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:38,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:13:38,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237496029] [2020-09-25 10:13:38,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:38,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:38,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:38,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:38,774 INFO L87 Difference]: Start difference. First operand 891 states and 1043 transitions. Second operand 7 states. [2020-09-25 10:13:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:41,910 INFO L93 Difference]: Finished difference Result 2215 states and 2704 transitions. [2020-09-25 10:13:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:13:41,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 10:13:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:41,919 INFO L225 Difference]: With dead ends: 2215 [2020-09-25 10:13:41,919 INFO L226 Difference]: Without dead ends: 1339 [2020-09-25 10:13:41,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:13:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-09-25 10:13:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1283. [2020-09-25 10:13:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-09-25 10:13:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1522 transitions. [2020-09-25 10:13:41,963 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1522 transitions. Word has length 156 [2020-09-25 10:13:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:41,964 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 1522 transitions. [2020-09-25 10:13:41,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1522 transitions. [2020-09-25 10:13:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 10:13:41,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:41,970 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, 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] [2020-09-25 10:13:41,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:41,970 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:41,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1204524291, now seen corresponding path program 1 times [2020-09-25 10:13:41,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:41,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336865103] [2020-09-25 10:13:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:47,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 10:13:47,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:13:47,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:47,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:13:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:13:47,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 10:13:47,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:47,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:47,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:47,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:47,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:13:47,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:47,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:47,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:47,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:47,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:47,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:47,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:47,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 10:13:47,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:47,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:47,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:47,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:13:47,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:13:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:47,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:13:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-09-25 10:13:47,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:47,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:47,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 10:13:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:48,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336865103] [2020-09-25 10:13:48,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:48,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:48,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151963848] [2020-09-25 10:13:48,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:48,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:48,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:48,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:48,110 INFO L87 Difference]: Start difference. First operand 1283 states and 1522 transitions. Second operand 9 states. [2020-09-25 10:13:54,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:54,321 INFO L93 Difference]: Finished difference Result 3675 states and 4658 transitions. [2020-09-25 10:13:54,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:13:54,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2020-09-25 10:13:54,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:54,329 INFO L225 Difference]: With dead ends: 3675 [2020-09-25 10:13:54,329 INFO L226 Difference]: Without dead ends: 1211 [2020-09-25 10:13:54,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:13:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2020-09-25 10:13:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 933. [2020-09-25 10:13:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-09-25 10:13:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1010 transitions. [2020-09-25 10:13:54,376 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1010 transitions. Word has length 239 [2020-09-25 10:13:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:54,376 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1010 transitions. [2020-09-25 10:13:54,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:13:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1010 transitions. [2020-09-25 10:13:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-25 10:13:54,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:54,382 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:54,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:54,382 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1227686243, now seen corresponding path program 1 times [2020-09-25 10:13:54,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:54,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346388588] [2020-09-25 10:13:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:59,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:59,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-09-25 10:13:59,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:59,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:13:59,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:59,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-25 10:13:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-25 10:13:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:59,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:59,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:59,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:59,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:59,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:13:59,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:59,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:59,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:59,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:59,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:59,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 10:13:59,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:59,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 10:13:59,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:59,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:13:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:59,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 10:13:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:14:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:00,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-25 10:14:00,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:00,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:00,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:14:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:14:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 10:14:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:14:00,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346388588] [2020-09-25 10:14:00,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:14:00,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:14:00,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301939732] [2020-09-25 10:14:00,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:14:00,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:14:00,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:14:00,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:14:00,825 INFO L87 Difference]: Start difference. First operand 933 states and 1010 transitions. Second operand 7 states. [2020-09-25 10:14:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:14:02,879 INFO L93 Difference]: Finished difference Result 2307 states and 2551 transitions. [2020-09-25 10:14:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:14:02,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-09-25 10:14:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:14:02,888 INFO L225 Difference]: With dead ends: 2307 [2020-09-25 10:14:02,888 INFO L226 Difference]: Without dead ends: 1389 [2020-09-25 10:14:02,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:14:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-09-25 10:14:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1345. [2020-09-25 10:14:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2020-09-25 10:14:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1464 transitions. [2020-09-25 10:14:02,937 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1464 transitions. Word has length 369 [2020-09-25 10:14:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:14:02,940 INFO L479 AbstractCegarLoop]: Abstraction has 1345 states and 1464 transitions. [2020-09-25 10:14:02,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:14:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1464 transitions. [2020-09-25 10:14:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-09-25 10:14:02,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:14:02,948 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:14:02,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:14:02,952 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:14:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:14:02,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1905156978, now seen corresponding path program 1 times [2020-09-25 10:14:02,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:14:02,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056670709] [2020-09-25 10:14:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:14:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:03,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:03,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:08,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:08,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-09-25 10:14:08,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:14:08,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 10:14:08,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:08,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:14:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-09-25 10:14:08,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-25 10:14:08,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:08,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:14:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:08,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:08,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:14:08,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:08,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:14:08,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:08,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:14:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:14:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:14:08,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:14:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:08,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:08,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:08,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 10:14:08,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:08,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 10:14:08,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:08,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:08,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:14:08,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:14:08,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 10:14:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-25 10:14:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:14:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-09-25 10:14:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:08,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:14:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:14:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 10:14:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:14:09,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056670709] [2020-09-25 10:14:09,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:14:09,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:14:09,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197193536] [2020-09-25 10:14:09,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:14:09,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:14:09,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:14:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:14:09,231 INFO L87 Difference]: Start difference. First operand 1345 states and 1464 transitions. Second operand 8 states. [2020-09-25 10:14:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:14:12,483 INFO L93 Difference]: Finished difference Result 4709 states and 5238 transitions. [2020-09-25 10:14:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:14:12,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 394 [2020-09-25 10:14:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:14:12,503 INFO L225 Difference]: With dead ends: 4709 [2020-09-25 10:14:12,504 INFO L226 Difference]: Without dead ends: 3379 [2020-09-25 10:14:12,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:14:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2020-09-25 10:14:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3267. [2020-09-25 10:14:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3267 states. [2020-09-25 10:14:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 3581 transitions. [2020-09-25 10:14:12,637 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 3581 transitions. Word has length 394 [2020-09-25 10:14:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:14:12,638 INFO L479 AbstractCegarLoop]: Abstraction has 3267 states and 3581 transitions. [2020-09-25 10:14:12,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:14:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 3581 transitions. [2020-09-25 10:14:12,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-09-25 10:14:12,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:14:12,652 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:14:12,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:14:12,653 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:14:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:14:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1143712640, now seen corresponding path program 1 times [2020-09-25 10:14:12,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:14:12,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883831613] [2020-09-25 10:14:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:14:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:13,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:13,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking...