/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:02,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:02,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:02,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:02,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:02,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:02,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:02,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:02,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:02,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:02,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:02,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:02,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:02,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:02,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:02,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:02,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:02,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:02,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:02,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:02,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:02,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:02,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:02,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:02,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:02,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:02,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:02,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:02,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:02,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:02,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:02,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:02,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:02,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:02,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:02,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:02,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:02,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:02,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:02,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:02,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:02,359 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 11:18:02,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:02,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:02,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:02,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:02,388 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:02,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:02,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:02,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:02,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:02,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:02,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:02,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:02,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:02,390 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:02,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:02,390 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:02,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:02,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:02,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:02,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:02,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:02,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:02,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:02,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:02,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:02,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:02,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:02,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:02,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:02,393 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:18:02,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:02,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:02,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:02,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:02,908 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:02,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 11:18:03,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9532d4777/f5d233aa203c4a51a5e286612a272884/FLAGadfcc7bc6 [2020-09-25 11:18:03,695 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:03,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 11:18:03,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9532d4777/f5d233aa203c4a51a5e286612a272884/FLAGadfcc7bc6 [2020-09-25 11:18:03,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9532d4777/f5d233aa203c4a51a5e286612a272884 [2020-09-25 11:18:03,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:03,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:03,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:03,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:03,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:03,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:03" (1/1) ... [2020-09-25 11:18:03,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c32e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:03, skipping insertion in model container [2020-09-25 11:18:03,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:03" (1/1) ... [2020-09-25 11:18:03,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:04,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:04,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:04,637 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:04,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:04,781 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:04,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04 WrapperNode [2020-09-25 11:18:04,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:04,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:04,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:04,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:04,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (1/1) ... [2020-09-25 11:18:04,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (1/1) ... [2020-09-25 11:18:04,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (1/1) ... [2020-09-25 11:18:04,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (1/1) ... [2020-09-25 11:18:04,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (1/1) ... [2020-09-25 11:18:04,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (1/1) ... [2020-09-25 11:18:04,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (1/1) ... [2020-09-25 11:18:04,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:04,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:04,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:04,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:04,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (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 11:18:04,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:04,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:04,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:04,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:04,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:04,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:06,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:06,359 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:06,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:06 BoogieIcfgContainer [2020-09-25 11:18:06,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:06,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:06,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:06,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:06,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:03" (1/3) ... [2020-09-25 11:18:06,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e506e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:06, skipping insertion in model container [2020-09-25 11:18:06,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:04" (2/3) ... [2020-09-25 11:18:06,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e506e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:06, skipping insertion in model container [2020-09-25 11:18:06,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:06" (3/3) ... [2020-09-25 11:18:06,380 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 11:18:06,394 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:06,406 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:06,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:06,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:06,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:06,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:06,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:06,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:06,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:06,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:06,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:18:06,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 11:18:06,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:06,526 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] [2020-09-25 11:18:06,527 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:06,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:06,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 11:18:06,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:06,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083735488] [2020-09-25 11:18:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:11,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:11,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 11:18:11,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:18:11,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 11:18:11,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:11,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:18:11,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 11:18:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:18:12,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:12,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:12,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 11:18:12,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:12,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:18:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:12,167 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 11:18:12,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083735488] [2020-09-25 11:18:12,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:12,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:12,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222796607] [2020-09-25 11:18:12,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:12,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:12,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:12,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:12,200 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:18:14,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:14,862 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 11:18:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:14,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 11:18:14,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:14,911 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 11:18:14,911 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 11:18:14,941 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 11:18:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 11:18:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 11:18:15,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 11:18:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 11:18:15,064 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 117 [2020-09-25 11:18:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:15,065 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 11:18:15,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 11:18:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 11:18:15,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:15,074 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:18:15,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:15,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:15,076 INFO L82 PathProgramCache]: Analyzing trace with hash -890048490, now seen corresponding path program 1 times [2020-09-25 11:18:15,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:15,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988169679] [2020-09-25 11:18:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:15,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:16,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:20,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 11:18:20,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:18:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:18:20,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:20,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:18:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 11:18:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:20,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:20,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:18:20,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:20,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:20,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:20,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:20,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:20,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:20,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:20,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:18:20,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:18:20,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:20,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 11:18:20,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:20,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:20,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988169679] [2020-09-25 11:18:20,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:20,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:20,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181286608] [2020-09-25 11:18:20,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:20,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:20,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:20,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:20,492 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 11:18:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:22,372 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 11:18:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:22,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 11:18:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:22,380 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 11:18:22,380 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 11:18:22,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 11:18:22,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 11:18:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 11:18:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 11:18:22,430 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 135 [2020-09-25 11:18:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:22,431 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 11:18:22,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 11:18:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:18:22,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:22,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:22,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:22,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:22,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1102849521, now seen corresponding path program 1 times [2020-09-25 11:18:22,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:22,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727638969] [2020-09-25 11:18:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:23,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:27,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 11:18:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:18:27,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:27,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:18:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:18:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:27,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:27,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:18:27,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:27,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:18:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:27,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:27,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:18:27,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:27,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 11:18:27,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:27,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:27,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:18:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:28,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727638969] [2020-09-25 11:18:28,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:28,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:28,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394914809] [2020-09-25 11:18:28,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:28,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:28,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:28,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:28,270 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 10 states. [2020-09-25 11:18:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:31,489 INFO L93 Difference]: Finished difference Result 3219 states and 4260 transitions. [2020-09-25 11:18:31,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:31,490 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 151 [2020-09-25 11:18:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:31,501 INFO L225 Difference]: With dead ends: 3219 [2020-09-25 11:18:31,502 INFO L226 Difference]: Without dead ends: 973 [2020-09-25 11:18:31,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:18:31,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-25 11:18:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-25 11:18:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-25 11:18:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-25 11:18:31,549 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 151 [2020-09-25 11:18:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:31,550 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-25 11:18:31,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-25 11:18:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 11:18:31,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:31,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:31,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:31,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:31,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1385410123, now seen corresponding path program 1 times [2020-09-25 11:18:31,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:31,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137009910] [2020-09-25 11:18:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:33,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:36,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:36,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 11:18:36,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:18:36,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:18:36,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:36,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:36,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:18:36,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 11:18:36,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:36,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:36,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:36,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:36,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:18:36,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:36,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:36,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:18:36,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:36,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:36,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:36,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:18:36,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 11:18:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:36,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 11:18:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:36,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137009910] [2020-09-25 11:18:36,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:36,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:18:36,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801777918] [2020-09-25 11:18:36,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:18:36,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:36,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:18:36,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:36,916 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 6 states. [2020-09-25 11:18:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:38,590 INFO L93 Difference]: Finished difference Result 2737 states and 3504 transitions. [2020-09-25 11:18:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:18:38,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2020-09-25 11:18:38,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:38,615 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 11:18:38,616 INFO L226 Difference]: Without dead ends: 1795 [2020-09-25 11:18:38,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2020-09-25 11:18:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1632. [2020-09-25 11:18:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2020-09-25 11:18:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2034 transitions. [2020-09-25 11:18:38,717 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2034 transitions. Word has length 155 [2020-09-25 11:18:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:38,720 INFO L479 AbstractCegarLoop]: Abstraction has 1632 states and 2034 transitions. [2020-09-25 11:18:38,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:18:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2034 transitions. [2020-09-25 11:18:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 11:18:38,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:38,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:38,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:38,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:38,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:38,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1304518793, now seen corresponding path program 1 times [2020-09-25 11:18:38,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:38,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587533223] [2020-09-25 11:18:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 11:18:43,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:18:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:18:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 11:18:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:18:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:43,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:43,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:43,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:18:43,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:43,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:43,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:43,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:43,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:18:43,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:43,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:18:43,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:43,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:43,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:43,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:18:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:44,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:18:44,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:44,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 11:18:44,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:44,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:44,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 11:18:44,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:18:44,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587533223] [2020-09-25 11:18:44,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:44,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:44,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011744348] [2020-09-25 11:18:44,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:44,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:44,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:44,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:44,105 INFO L87 Difference]: Start difference. First operand 1632 states and 2034 transitions. Second operand 5 states. [2020-09-25 11:18:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:45,995 INFO L93 Difference]: Finished difference Result 4362 states and 5599 transitions. [2020-09-25 11:18:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:45,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 11:18:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:46,011 INFO L225 Difference]: With dead ends: 4362 [2020-09-25 11:18:46,011 INFO L226 Difference]: Without dead ends: 2752 [2020-09-25 11:18:46,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:46,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2020-09-25 11:18:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2711. [2020-09-25 11:18:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2020-09-25 11:18:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3227 transitions. [2020-09-25 11:18:46,112 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3227 transitions. Word has length 173 [2020-09-25 11:18:46,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:46,113 INFO L479 AbstractCegarLoop]: Abstraction has 2711 states and 3227 transitions. [2020-09-25 11:18:46,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:46,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3227 transitions. [2020-09-25 11:18:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 11:18:46,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:46,124 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:46,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:46,124 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:46,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash 455996372, now seen corresponding path program 1 times [2020-09-25 11:18:46,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:46,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641165228] [2020-09-25 11:18:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:47,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking...