/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:18,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:18,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:18,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:18,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:18,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:18,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:18,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:18,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:18,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:18,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:18,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:18,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:18,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:18,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:18,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:18,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:18,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:18,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:18,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:18,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:18,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:18,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:18,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:18,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:18,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:18,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:18,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:18,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:18,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:18,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:18,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:18,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:18,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:18,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:18,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:18,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:18,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:18,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:18,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:18,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:18,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:05:18,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:18,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:18,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:18,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:18,503 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:18,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:18,504 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:18,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:18,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:18,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:18,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:18,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:18,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:18,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:18,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:18,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:18,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:18,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:18,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:18,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:18,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:18,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:18,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:18,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:18,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:18,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:18,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:18,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:18,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:18,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:05:19,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:19,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:19,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:19,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:19,034 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:19,035 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 09:05:19,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef9c6767/2a31aa8b59e2484e9e2a6172fcee33ec/FLAGa55040ec7 [2020-09-25 09:05:19,849 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:19,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 09:05:19,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef9c6767/2a31aa8b59e2484e9e2a6172fcee33ec/FLAGa55040ec7 [2020-09-25 09:05:20,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef9c6767/2a31aa8b59e2484e9e2a6172fcee33ec [2020-09-25 09:05:20,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:20,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:20,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:20,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:20,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:20,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4635f4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:20, skipping insertion in model container [2020-09-25 09:05:20,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:20" (1/1) ... [2020-09-25 09:05:20,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:20,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:20,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:20,898 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:21,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:21,027 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:21,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21 WrapperNode [2020-09-25 09:05:21,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:21,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:21,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:21,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:21,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... [2020-09-25 09:05:21,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... [2020-09-25 09:05:21,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... [2020-09-25 09:05:21,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... [2020-09-25 09:05:21,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... [2020-09-25 09:05:21,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... [2020-09-25 09:05:21,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... [2020-09-25 09:05:21,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:21,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:21,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:21,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:21,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:22,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:22,789 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:22,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:22 BoogieIcfgContainer [2020-09-25 09:05:22,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:22,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:22,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:22,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:22,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:20" (1/3) ... [2020-09-25 09:05:22,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f41d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:22, skipping insertion in model container [2020-09-25 09:05:22,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:21" (2/3) ... [2020-09-25 09:05:22,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f41d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:22, skipping insertion in model container [2020-09-25 09:05:22,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:22" (3/3) ... [2020-09-25 09:05:22,811 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 09:05:22,826 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:22,840 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:22,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:22,909 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:22,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:22,910 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:22,910 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:22,910 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:22,910 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:22,910 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:22,911 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 09:05:22,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:22,956 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] [2020-09-25 09:05:22,956 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 09:05:22,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:22,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854243237] [2020-09-25 09:05:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:24,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 09:05:24,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:24,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-25 09:05:24,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:24,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:24,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:05:24,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 30 [2020-09-25 09:05:24,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:24,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:24,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:05:24,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:24,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:24,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854243237] [2020-09-25 09:05:24,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:24,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:24,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581659921] [2020-09-25 09:05:24,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:24,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:24,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:24,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:24,492 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:26,788 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 09:05:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:26,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 09:05:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:26,814 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 09:05:26,814 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 09:05:26,825 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 09:05:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 09:05:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 09:05:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 09:05:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 09:05:26,934 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 09:05:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:26,953 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 09:05:26,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 09:05:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 09:05:26,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:26,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:26,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:26,962 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:26,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:26,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 09:05:26,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:26,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814595896] [2020-09-25 09:05:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:32,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 09:05:32,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:05:32,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:05:32,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:32,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:32,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 09:05:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:32,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:32,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:32,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:32,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:32,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:05:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:32,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:32,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:32,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:32,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:32,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 09:05:32,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:32,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:32,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:32,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814595896] [2020-09-25 09:05:32,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:32,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:32,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146037437] [2020-09-25 09:05:32,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:32,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:32,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:32,671 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 10 states. [2020-09-25 09:05:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:36,482 INFO L93 Difference]: Finished difference Result 1663 states and 2149 transitions. [2020-09-25 09:05:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:36,484 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-09-25 09:05:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:36,491 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 09:05:36,492 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 09:05:36,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:05:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 09:05:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 09:05:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 09:05:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 09:05:36,552 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 129 [2020-09-25 09:05:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:36,553 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 09:05:36,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 09:05:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 09:05:36,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:36,557 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, 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] [2020-09-25 09:05:36,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:36,557 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:36,558 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 09:05:36,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:36,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231266825] [2020-09-25 09:05:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 09:05:38,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2135 [2020-09-25 09:05:38,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 09:05:38,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:38,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:38,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:38,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:05:38,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:38,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:38,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:38,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:39,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:39,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:39,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:39,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 09:05:39,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:39,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:05:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:39,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231266825] [2020-09-25 09:05:39,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:39,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:39,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517951351] [2020-09-25 09:05:39,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:39,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:39,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:39,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:39,142 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 6 states. [2020-09-25 09:05:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:40,703 INFO L93 Difference]: Finished difference Result 2827 states and 3550 transitions. [2020-09-25 09:05:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:40,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-09-25 09:05:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:40,725 INFO L225 Difference]: With dead ends: 2827 [2020-09-25 09:05:40,725 INFO L226 Difference]: Without dead ends: 1810 [2020-09-25 09:05:40,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2020-09-25 09:05:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1648. [2020-09-25 09:05:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-09-25 09:05:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2049 transitions. [2020-09-25 09:05:40,813 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2049 transitions. Word has length 129 [2020-09-25 09:05:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:40,814 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 2049 transitions. [2020-09-25 09:05:40,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2049 transitions. [2020-09-25 09:05:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 09:05:40,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:40,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:40,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:40,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:40,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:40,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 09:05:40,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:40,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934507898] [2020-09-25 09:05:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:45,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 09:05:45,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:45,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4809 [2020-09-25 09:05:45,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:45,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:45,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:45,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 09:05:45,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:45,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:45,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:45,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:05:45,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:45,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:45,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:45,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:45,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 09:05:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:45,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:45,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934507898] [2020-09-25 09:05:45,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:45,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:45,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137267313] [2020-09-25 09:05:45,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:45,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:45,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:45,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:45,967 INFO L87 Difference]: Start difference. First operand 1648 states and 2049 transitions. Second operand 6 states. [2020-09-25 09:05:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:48,382 INFO L93 Difference]: Finished difference Result 4122 states and 5348 transitions. [2020-09-25 09:05:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:48,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-09-25 09:05:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:48,409 INFO L225 Difference]: With dead ends: 4122 [2020-09-25 09:05:48,410 INFO L226 Difference]: Without dead ends: 2489 [2020-09-25 09:05:48,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:48,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2020-09-25 09:05:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2424. [2020-09-25 09:05:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2424 states. [2020-09-25 09:05:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3158 transitions. [2020-09-25 09:05:48,544 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3158 transitions. Word has length 135 [2020-09-25 09:05:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:48,545 INFO L479 AbstractCegarLoop]: Abstraction has 2424 states and 3158 transitions. [2020-09-25 09:05:48,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3158 transitions. [2020-09-25 09:05:48,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 09:05:48,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:48,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:48,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:48,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:48,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:48,549 INFO L82 PathProgramCache]: Analyzing trace with hash -431173929, now seen corresponding path program 1 times [2020-09-25 09:05:48,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:48,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3632166] [2020-09-25 09:05:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:52,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 09:05:52,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:05:52,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3576 [2020-09-25 09:05:52,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:52,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:52,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 09:05:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:52,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:52,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:52,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:05:52,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:52,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:52,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:05:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:52,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:52,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:05:52,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:52,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 09:05:52,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:52,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:52,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:05:52,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:52,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3632166] [2020-09-25 09:05:52,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:52,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:52,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748633098] [2020-09-25 09:05:52,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:52,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:52,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:52,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:52,557 INFO L87 Difference]: Start difference. First operand 2424 states and 3158 transitions. Second operand 7 states. [2020-09-25 09:05:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:54,990 INFO L93 Difference]: Finished difference Result 6315 states and 8659 transitions. [2020-09-25 09:05:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:54,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-09-25 09:05:54,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:55,032 INFO L225 Difference]: With dead ends: 6315 [2020-09-25 09:05:55,032 INFO L226 Difference]: Without dead ends: 3906 [2020-09-25 09:05:55,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 09:05:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2020-09-25 09:05:55,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 3532. [2020-09-25 09:05:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3532 states. [2020-09-25 09:05:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4555 transitions. [2020-09-25 09:05:55,240 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4555 transitions. Word has length 154 [2020-09-25 09:05:55,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:55,241 INFO L479 AbstractCegarLoop]: Abstraction has 3532 states and 4555 transitions. [2020-09-25 09:05:55,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4555 transitions. [2020-09-25 09:05:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 09:05:55,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:55,252 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:05:55,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:55,252 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:55,253 INFO L82 PathProgramCache]: Analyzing trace with hash -863657445, now seen corresponding path program 1 times [2020-09-25 09:05:55,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:55,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619674588] [2020-09-25 09:05:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 09:06:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:06:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 09:06:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:06:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:06:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 09:06:00,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:06:00,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 09:06:00,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:06:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:01,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619674588] [2020-09-25 09:06:01,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:01,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:06:01,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993267656] [2020-09-25 09:06:01,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:01,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:01,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:01,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:01,071 INFO L87 Difference]: Start difference. First operand 3532 states and 4555 transitions. Second operand 7 states. [2020-09-25 09:06:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:03,615 INFO L93 Difference]: Finished difference Result 8056 states and 10707 transitions. [2020-09-25 09:06:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:06:03,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-09-25 09:06:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:03,644 INFO L225 Difference]: With dead ends: 8056 [2020-09-25 09:06:03,644 INFO L226 Difference]: Without dead ends: 3897 [2020-09-25 09:06:03,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:06:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2020-09-25 09:06:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3503. [2020-09-25 09:06:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3503 states. [2020-09-25 09:06:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 4381 transitions. [2020-09-25 09:06:03,801 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 4381 transitions. Word has length 229 [2020-09-25 09:06:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:03,802 INFO L479 AbstractCegarLoop]: Abstraction has 3503 states and 4381 transitions. [2020-09-25 09:06:03,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:06:03,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 4381 transitions. [2020-09-25 09:06:03,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 09:06:03,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:03,808 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:03,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:03,808 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:03,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:03,809 INFO L82 PathProgramCache]: Analyzing trace with hash -710414905, now seen corresponding path program 1 times [2020-09-25 09:06:03,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:03,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426695896] [2020-09-25 09:06:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking...