/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:01:08,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:01:08,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:01:08,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:01:08,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:01:08,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:01:08,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:01:08,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:01:08,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:01:08,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:01:08,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:01:08,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:01:08,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:01:08,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:01:08,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:01:08,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:01:08,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:01:08,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:01:08,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:01:08,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:01:08,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:01:08,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:01:08,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:01:08,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:01:08,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:01:08,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:01:08,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:01:08,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:01:08,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:01:08,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:01:08,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:01:08,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:01:08,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:01:08,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:01:08,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:01:08,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:01:08,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:01:08,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:01:08,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:01:08,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:01:08,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:01:08,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:01:08,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:01:08,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:01:08,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:01:08,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:01:08,154 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:01:08,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:01:08,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:01:08,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:01:08,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:01:08,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:01:08,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:01:08,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:01:08,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:01:08,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:01:08,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:01:08,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:01:08,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:01:08,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:01:08,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:01:08,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:01:08,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:01:08,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:08,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:01:08,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:01:08,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:01:08,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:01:08,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:01:08,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:01:08,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:01:08,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:01:08,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:01:08,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:01:08,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:01:08,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:01:08,630 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:01:08,631 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 09:01:08,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d7b78cab/b7b31aa69b994119ba28c714717e0fe3/FLAG73ee88930 [2020-09-25 09:01:09,321 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:01:09,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 09:01:09,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d7b78cab/b7b31aa69b994119ba28c714717e0fe3/FLAG73ee88930 [2020-09-25 09:01:09,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d7b78cab/b7b31aa69b994119ba28c714717e0fe3 [2020-09-25 09:01:09,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:01:09,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:01:09,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:09,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:01:09,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:01:09,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:09" (1/1) ... [2020-09-25 09:01:09,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:09, skipping insertion in model container [2020-09-25 09:01:09,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:01:09" (1/1) ... [2020-09-25 09:01:09,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:01:09,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:01:10,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:10,127 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:01:10,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:01:10,404 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:01:10,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10 WrapperNode [2020-09-25 09:01:10,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:01:10,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:01:10,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:01:10,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:01:10,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... [2020-09-25 09:01:10,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... [2020-09-25 09:01:10,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... [2020-09-25 09:01:10,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... [2020-09-25 09:01:10,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... [2020-09-25 09:01:10,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... [2020-09-25 09:01:10,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... [2020-09-25 09:01:10,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:01:10,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:01:10,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:01:10,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:01:10,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:01:10,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:01:10,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:01:10,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:01:10,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:01:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:01:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:01:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:01:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:01:10,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:01:10,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:01:10,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:01:11,959 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:01:11,960 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:01:11,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:11 BoogieIcfgContainer [2020-09-25 09:01:11,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:01:11,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:01:11,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:01:11,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:01:11,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:01:09" (1/3) ... [2020-09-25 09:01:11,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:11, skipping insertion in model container [2020-09-25 09:01:11,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:01:10" (2/3) ... [2020-09-25 09:01:11,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:01:11, skipping insertion in model container [2020-09-25 09:01:11,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:01:11" (3/3) ... [2020-09-25 09:01:11,980 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 09:01:11,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:01:12,003 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:01:12,026 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:01:12,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:01:12,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:01:12,062 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:01:12,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:01:12,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:01:12,063 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:01:12,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:01:12,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:01:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:01:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 09:01:12,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:12,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:12,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:12,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 09:01:12,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:12,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472671411] [2020-09-25 09:01:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:17,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 09:01:17,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:01:17,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:17,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:01:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:01:17,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 09:01:17,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:01:17,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:17,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:17,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:17,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:01:17,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:17,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:17,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:01:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:17,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472671411] [2020-09-25 09:01:17,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:01:17,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:01:17,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439890228] [2020-09-25 09:01:17,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:01:17,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:17,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:01:17,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:01:17,907 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:01:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:20,159 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 09:01:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:01:20,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 09:01:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:20,187 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 09:01:20,187 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 09:01:20,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 09:01:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 09:01:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:01:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:01:20,371 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 09:01:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:20,372 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:01:20,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:01:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:01:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 09:01:20,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:20,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:20,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:01:20,386 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:20,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 09:01:20,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:20,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080838023] [2020-09-25 09:01:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:22,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:25,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 09:01:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:01:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:01:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:25,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:01:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 09:01:25,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 09:01:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:01:25,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:25,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:25,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:01:25,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:25,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 09:01:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:25,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:25,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:01:25,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:25,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 09:01:25,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:25,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:01:25,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:01:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:26,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080838023] [2020-09-25 09:01:26,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:26,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:01:26,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134552688] [2020-09-25 09:01:26,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:01:26,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:26,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:01:26,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:01:26,172 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 09:01:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:30,104 INFO L93 Difference]: Finished difference Result 1904 states and 2480 transitions. [2020-09-25 09:01:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:01:30,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 09:01:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:30,123 INFO L225 Difference]: With dead ends: 1904 [2020-09-25 09:01:30,123 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 09:01:30,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:01:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 09:01:30,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 876. [2020-09-25 09:01:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-09-25 09:01:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1014 transitions. [2020-09-25 09:01:30,172 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1014 transitions. Word has length 171 [2020-09-25 09:01:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:30,172 INFO L479 AbstractCegarLoop]: Abstraction has 876 states and 1014 transitions. [2020-09-25 09:01:30,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:01:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1014 transitions. [2020-09-25 09:01:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:01:30,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:30,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:30,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:01:30,178 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:30,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:30,179 INFO L82 PathProgramCache]: Analyzing trace with hash 276355023, now seen corresponding path program 1 times [2020-09-25 09:01:30,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:30,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669418759] [2020-09-25 09:01:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:34,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:35,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:01:35,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 09:01:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 09:01:35,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:35,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 09:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:01:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:35,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:35,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:35,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:35,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:35,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:01:35,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:35,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:01:35,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:35,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:35,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:01:35,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669418759] [2020-09-25 09:01:35,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:35,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:35,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226527475] [2020-09-25 09:01:35,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:35,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:35,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:35,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:35,536 INFO L87 Difference]: Start difference. First operand 876 states and 1014 transitions. Second operand 5 states. [2020-09-25 09:01:37,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:37,442 INFO L93 Difference]: Finished difference Result 2214 states and 2644 transitions. [2020-09-25 09:01:37,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:01:37,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 09:01:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:37,452 INFO L225 Difference]: With dead ends: 2214 [2020-09-25 09:01:37,452 INFO L226 Difference]: Without dead ends: 1362 [2020-09-25 09:01:37,455 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 09:01:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-09-25 09:01:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1164. [2020-09-25 09:01:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2020-09-25 09:01:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1384 transitions. [2020-09-25 09:01:37,497 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1384 transitions. Word has length 175 [2020-09-25 09:01:37,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:37,497 INFO L479 AbstractCegarLoop]: Abstraction has 1164 states and 1384 transitions. [2020-09-25 09:01:37,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:01:37,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1384 transitions. [2020-09-25 09:01:37,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 09:01:37,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:37,504 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:37,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:01:37,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:37,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:37,506 INFO L82 PathProgramCache]: Analyzing trace with hash 956756217, now seen corresponding path program 1 times [2020-09-25 09:01:37,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:37,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205877596] [2020-09-25 09:01:37,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:40,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:41,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:42,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 09:01:42,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:01:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:01:42,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:42,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:01:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:01:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:42,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:42,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:42,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:01:42,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:42,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:42,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:42,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:42,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:01:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:01:42,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:42,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:01:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 09:01:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:42,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:42,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:42,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:01:42,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:42,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 09:01:42,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:42,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:01:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:42,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205877596] [2020-09-25 09:01:42,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:42,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:01:42,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341203418] [2020-09-25 09:01:42,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:01:42,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:42,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:01:42,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:01:42,879 INFO L87 Difference]: Start difference. First operand 1164 states and 1384 transitions. Second operand 7 states. [2020-09-25 09:01:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:45,200 INFO L93 Difference]: Finished difference Result 3354 states and 4088 transitions. [2020-09-25 09:01:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:01:45,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 09:01:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:45,218 INFO L225 Difference]: With dead ends: 3354 [2020-09-25 09:01:45,219 INFO L226 Difference]: Without dead ends: 2214 [2020-09-25 09:01:45,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:01:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2020-09-25 09:01:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1958. [2020-09-25 09:01:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2020-09-25 09:01:45,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2351 transitions. [2020-09-25 09:01:45,306 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2351 transitions. Word has length 216 [2020-09-25 09:01:45,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:45,306 INFO L479 AbstractCegarLoop]: Abstraction has 1958 states and 2351 transitions. [2020-09-25 09:01:45,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:01:45,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2351 transitions. [2020-09-25 09:01:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 09:01:45,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:45,317 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:45,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:01:45,317 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:45,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:45,318 INFO L82 PathProgramCache]: Analyzing trace with hash 19036305, now seen corresponding path program 1 times [2020-09-25 09:01:45,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:45,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269191789] [2020-09-25 09:01:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:45,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:50,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 09:01:50,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:01:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:01:50,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:50,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:01:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 09:01:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 09:01:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:01:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:50,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:01:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:50,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:50,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:50,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:01:50,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:50,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:01:50,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:50,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:50,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:01:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:50,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:01:50,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:50,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:01:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:50,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:50,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:50,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 09:01:50,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:50,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 09:01:50,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:50,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:50,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:50,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:50,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:01:50,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:50,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269191789] [2020-09-25 09:01:50,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:50,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:01:50,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126437320] [2020-09-25 09:01:50,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:01:50,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:01:50,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:01:50,778 INFO L87 Difference]: Start difference. First operand 1958 states and 2351 transitions. Second operand 8 states. [2020-09-25 09:01:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:53,958 INFO L93 Difference]: Finished difference Result 5178 states and 6454 transitions. [2020-09-25 09:01:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:01:53,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-25 09:01:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:53,977 INFO L225 Difference]: With dead ends: 5178 [2020-09-25 09:01:53,977 INFO L226 Difference]: Without dead ends: 3071 [2020-09-25 09:01:53,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:01:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2020-09-25 09:01:54,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 2976. [2020-09-25 09:01:54,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2976 states. [2020-09-25 09:01:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 3625 transitions. [2020-09-25 09:01:54,070 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 3625 transitions. Word has length 219 [2020-09-25 09:01:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:54,070 INFO L479 AbstractCegarLoop]: Abstraction has 2976 states and 3625 transitions. [2020-09-25 09:01:54,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:01:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 3625 transitions. [2020-09-25 09:01:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 09:01:54,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:54,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:54,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:54,085 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:54,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:54,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1783992526, now seen corresponding path program 1 times [2020-09-25 09:01:54,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:54,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480590078] [2020-09-25 09:01:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:57,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:59,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 09:01:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 09:01:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:01:59,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:59,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 09:01:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 09:01:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:59,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:59,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:59,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:59,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:01:59,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:59,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:59,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:59,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:59,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:59,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:01:59,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:59,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:01:59,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:59,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:01:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:59,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:01:59,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 09:01:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 09:01:59,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 09:01:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:59,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:59,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 09:01:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:01:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:01:59,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480590078] [2020-09-25 09:01:59,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:59,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:01:59,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687224516] [2020-09-25 09:01:59,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:01:59,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:59,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:01:59,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:01:59,427 INFO L87 Difference]: Start difference. First operand 2976 states and 3625 transitions. Second operand 5 states.