/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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:05,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:05,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:05,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:05,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:05,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:05,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:05,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:05,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:05,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:05,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:05,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:05,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:05,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:05,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:05,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:05,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:05,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:05,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:05,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:05,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:05,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:05,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:05,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:05,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:05,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:05,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:05,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:05,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:05,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:05,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:05,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:05,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:05,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:05,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:05,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:05,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:05,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:05,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:05,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:05,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:05,497 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 09:05:05,548 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:05,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:05,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:05,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:05,552 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:05,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:05,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:05,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:05,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:05,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:05,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:05,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:05,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:05,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:05,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:05,555 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:05,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:05,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:05,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:05,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:05,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:05,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:05,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:05,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:05,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:05,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:05,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:05,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:05,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:05,559 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 09:05:06,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:06,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:06,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:06,078 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:06,078 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:06,079 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 09:05:06,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1eba371/9230977f5c5348b7b442d961b52a490a/FLAGe15a312e0 [2020-09-25 09:05:06,764 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:06,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 09:05:06,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1eba371/9230977f5c5348b7b442d961b52a490a/FLAGe15a312e0 [2020-09-25 09:05:07,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b1eba371/9230977f5c5348b7b442d961b52a490a [2020-09-25 09:05:07,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:07,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:07,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:07,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:07,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:07,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:07,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07, skipping insertion in model container [2020-09-25 09:05:07,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:07,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:07,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:07,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:07,764 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:07,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:07,974 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:07,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07 WrapperNode [2020-09-25 09:05:07,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:07,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:07,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:07,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:07,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:08,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:08,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:08,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:08,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:08,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:08,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (1/1) ... [2020-09-25 09:05:08,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:08,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:08,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:08,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:08,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (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 09:05:08,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:08,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:08,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:08,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:10,174 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:10,175 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:10,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:10 BoogieIcfgContainer [2020-09-25 09:05:10,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:10,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:10,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:10,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:10,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:07" (1/3) ... [2020-09-25 09:05:10,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:10, skipping insertion in model container [2020-09-25 09:05:10,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:07" (2/3) ... [2020-09-25 09:05:10,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:10, skipping insertion in model container [2020-09-25 09:05:10,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:10" (3/3) ... [2020-09-25 09:05:10,193 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 09:05:10,205 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:10,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:10,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:10,280 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:10,280 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:10,280 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:10,280 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:10,281 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:10,281 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:10,281 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:10,281 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 09:05:10,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:10,328 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] [2020-09-25 09:05:10,328 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:10,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 09:05:10,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:10,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484036615] [2020-09-25 09:05:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:12,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:05:12,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-09-25 09:05:12,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:12,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:12,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:05:12,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:05:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:12,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:12,214 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 09:05:12,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484036615] [2020-09-25 09:05:12,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:12,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:12,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455885013] [2020-09-25 09:05:12,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:12,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:12,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:12,245 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:14,364 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 09:05:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:14,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 09:05:14,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:14,390 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 09:05:14,390 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 09:05:14,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 09:05:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 09:05:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 09:05:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 09:05:14,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 09:05:14,511 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 09:05:14,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:14,512 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 09:05:14,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 09:05:14,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 09:05:14,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:14,522 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:05:14,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:14,523 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:14,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:14,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 09:05:14,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:14,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832340782] [2020-09-25 09:05:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:15,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:18,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 09:05:18,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3914 [2020-09-25 09:05:18,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:18,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 09:05:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:18,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:18,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:18,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:18,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 09:05:18,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:18,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:18,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:18,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 09:05:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:05:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:19,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832340782] [2020-09-25 09:05:19,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:19,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:19,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118778083] [2020-09-25 09:05:19,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:19,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:19,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:19,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:19,131 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 09:05:21,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:21,030 INFO L93 Difference]: Finished difference Result 1226 states and 1532 transitions. [2020-09-25 09:05:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:21,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 09:05:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:21,037 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:05:21,038 INFO L226 Difference]: Without dead ends: 697 [2020-09-25 09:05:21,040 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 09:05:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-09-25 09:05:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 695. [2020-09-25 09:05:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:05:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 09:05:21,090 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 159 [2020-09-25 09:05:21,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:21,092 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 09:05:21,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 09:05:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 09:05:21,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:21,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:05:21,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:21,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:21,103 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 09:05:21,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:21,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634435581] [2020-09-25 09:05:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:26,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 09:05:26,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:05:26,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:26,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:26,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:26,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:05:26,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:05:26,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:26,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:26,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:26,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:26,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 09:05:26,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:26,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:26,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634435581] [2020-09-25 09:05:26,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:26,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:26,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282931014] [2020-09-25 09:05:26,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:26,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:26,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:26,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:26,567 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 09:05:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:29,430 INFO L93 Difference]: Finished difference Result 1909 states and 2489 transitions. [2020-09-25 09:05:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:29,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 09:05:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:29,450 INFO L225 Difference]: With dead ends: 1909 [2020-09-25 09:05:29,450 INFO L226 Difference]: Without dead ends: 1379 [2020-09-25 09:05:29,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-09-25 09:05:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1323. [2020-09-25 09:05:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-09-25 09:05:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1703 transitions. [2020-09-25 09:05:29,548 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1703 transitions. Word has length 169 [2020-09-25 09:05:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:29,551 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1703 transitions. [2020-09-25 09:05:29,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1703 transitions. [2020-09-25 09:05:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 09:05:29,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:29,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:05:29,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:29,565 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:29,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:29,566 INFO L82 PathProgramCache]: Analyzing trace with hash 715941429, now seen corresponding path program 1 times [2020-09-25 09:05:29,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:29,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896525689] [2020-09-25 09:05:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 09:05:31,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:05:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-09-25 09:05:31,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:31,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:05:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:31,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:05:31,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:31,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:31,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:05:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 09:05:31,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:31,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:05:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:31,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896525689] [2020-09-25 09:05:31,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:31,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:31,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451200205] [2020-09-25 09:05:31,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:31,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:31,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:31,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:31,542 INFO L87 Difference]: Start difference. First operand 1323 states and 1703 transitions. Second operand 7 states. [2020-09-25 09:05:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:33,942 INFO L93 Difference]: Finished difference Result 3329 states and 4521 transitions. [2020-09-25 09:05:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:33,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 09:05:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:33,956 INFO L225 Difference]: With dead ends: 3329 [2020-09-25 09:05:33,957 INFO L226 Difference]: Without dead ends: 2171 [2020-09-25 09:05:33,963 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 09:05:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-09-25 09:05:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1813. [2020-09-25 09:05:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 09:05:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2264 transitions. [2020-09-25 09:05:34,056 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2264 transitions. Word has length 171 [2020-09-25 09:05:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:34,056 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2264 transitions. [2020-09-25 09:05:34,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2264 transitions. [2020-09-25 09:05:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-25 09:05:34,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:34,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:34,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:34,070 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1491417586, now seen corresponding path program 1 times [2020-09-25 09:05:34,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:34,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529499758] [2020-09-25 09:05:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:34,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-25 09:05:38,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:38,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4334 [2020-09-25 09:05:38,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 09:05:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 09:05:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:38,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:38,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:38,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:38,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 09:05:38,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:38,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:38,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:38,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 09:05:38,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:38,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:39,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:39,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 09:05:39,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:39,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 09:05:39,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:39,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 09:05:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 133 proven. 60 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:05:39,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529499758] [2020-09-25 09:05:39,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:39,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:39,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032610091] [2020-09-25 09:05:39,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:39,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:39,325 INFO L87 Difference]: Start difference. First operand 1813 states and 2264 transitions. Second operand 6 states. [2020-09-25 09:05:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:41,181 INFO L93 Difference]: Finished difference Result 4104 states and 5436 transitions. [2020-09-25 09:05:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:41,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-09-25 09:05:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:41,203 INFO L225 Difference]: With dead ends: 4104 [2020-09-25 09:05:41,204 INFO L226 Difference]: Without dead ends: 2456 [2020-09-25 09:05:41,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 09:05:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2020-09-25 09:05:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2426. [2020-09-25 09:05:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2020-09-25 09:05:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3152 transitions. [2020-09-25 09:05:41,295 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3152 transitions. Word has length 270 [2020-09-25 09:05:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:41,296 INFO L479 AbstractCegarLoop]: Abstraction has 2426 states and 3152 transitions. [2020-09-25 09:05:41,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3152 transitions. [2020-09-25 09:05:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-25 09:05:41,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:41,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:41,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:41,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1139980777, now seen corresponding path program 1 times [2020-09-25 09:05:41,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:41,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893636649] [2020-09-25 09:05:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:46,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-09-25 09:05:46,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:46,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-09-25 09:05:46,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:46,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 09:05:46,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 09:05:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:46,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:46,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:05:46,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:46,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:46,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:46,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:46,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:46,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 09:05:46,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:46,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:46,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:46,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 09:05:46,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:46,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 09:05:46,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 09:05:46,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:46,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:46,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 09:05:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:47,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893636649] [2020-09-25 09:05:47,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:47,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:05:47,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374527303] [2020-09-25 09:05:47,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:47,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:47,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:47,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:47,189 INFO L87 Difference]: Start difference. First operand 2426 states and 3152 transitions. Second operand 7 states. [2020-09-25 09:05:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:49,652 INFO L93 Difference]: Finished difference Result 5491 states and 7299 transitions. [2020-09-25 09:05:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:49,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-09-25 09:05:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:49,671 INFO L225 Difference]: With dead ends: 5491 [2020-09-25 09:05:49,671 INFO L226 Difference]: Without dead ends: 3230 [2020-09-25 09:05:49,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2020-09-25 09:05:49,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2902. [2020-09-25 09:05:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2902 states. [2020-09-25 09:05:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 3700 transitions. [2020-09-25 09:05:49,787 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 3700 transitions. Word has length 310 [2020-09-25 09:05:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:49,788 INFO L479 AbstractCegarLoop]: Abstraction has 2902 states and 3700 transitions. [2020-09-25 09:05:49,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 3700 transitions. [2020-09-25 09:05:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-25 09:05:49,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:49,808 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:49,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:05:49,808 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:49,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:49,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1816762361, now seen corresponding path program 1 times [2020-09-25 09:05:49,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:49,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403734421] [2020-09-25 09:05:49,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking...