/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=0.8 --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_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:57,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:57,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:57,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:57,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:57,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:57,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:57,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:57,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:57,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:57,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:57,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:57,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:57,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:57,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:57,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:57,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:57,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:57,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:57,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:57,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:57,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:57,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:57,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:57,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:57,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:57,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:57,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:57,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:57,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:57,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:57,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:57,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:57,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:57,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:57,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:57,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:57,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:57,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:57,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:57,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:57,345 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 07:56:57,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:57,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:57,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:57,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:57,398 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:57,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:57,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:57,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:57,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:57,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:57,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:57,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:57,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:57,401 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:57,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:57,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:57,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:57,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:57,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:57,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:57,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:57,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:57,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:57,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:57,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:57,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:57,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:57,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:57,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:57,405 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:56:57,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:57,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:57,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:57,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:57,874 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:57,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 07:56:57,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/458bfe1a7/d2eb19516eaf48e68b90ed8cb097684f/FLAGa6b6615ed [2020-09-25 07:56:58,587 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:58,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 07:56:58,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/458bfe1a7/d2eb19516eaf48e68b90ed8cb097684f/FLAGa6b6615ed [2020-09-25 07:56:58,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/458bfe1a7/d2eb19516eaf48e68b90ed8cb097684f [2020-09-25 07:56:58,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:58,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:58,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:58,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:58,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:58,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:58" (1/1) ... [2020-09-25 07:56:58,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:58, skipping insertion in model container [2020-09-25 07:56:58,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:58" (1/1) ... [2020-09-25 07:56:58,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:58,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:59,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:59,530 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:59,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:59,701 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:59,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59 WrapperNode [2020-09-25 07:56:59,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:59,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:59,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:59,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:59,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (1/1) ... [2020-09-25 07:56:59,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (1/1) ... [2020-09-25 07:56:59,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (1/1) ... [2020-09-25 07:56:59,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (1/1) ... [2020-09-25 07:56:59,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (1/1) ... [2020-09-25 07:56:59,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (1/1) ... [2020-09-25 07:56:59,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (1/1) ... [2020-09-25 07:56:59,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:59,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:59,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:59,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:59,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (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 07:56:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:01,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:01,441 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:01,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:01 BoogieIcfgContainer [2020-09-25 07:57:01,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:01,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:01,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:01,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:01,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:58" (1/3) ... [2020-09-25 07:57:01,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:01, skipping insertion in model container [2020-09-25 07:57:01,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:59" (2/3) ... [2020-09-25 07:57:01,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:01, skipping insertion in model container [2020-09-25 07:57:01,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:01" (3/3) ... [2020-09-25 07:57:01,460 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 07:57:01,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:01,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:01,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:01,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:01,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:01,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:01,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:01,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:01,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:01,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:01,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:01,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 07:57:01,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:01,598 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] [2020-09-25 07:57:01,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:01,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:01,607 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 07:57:01,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:01,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 07:57:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:02,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 07:57:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 804 [2020-09-25 07:57:02,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:02,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:57:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:02,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:02,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:02,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:02,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:57:02,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:02,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:02,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:02,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:02,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:02,781 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 07:57:02,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 07:57:02,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:02,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:02,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901028808] [2020-09-25 07:57:02,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:02,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:02,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:02,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:02,814 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:57:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:05,057 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:57:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:05,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 07:57:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:05,099 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:57:05,099 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:57:05,108 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 07:57:05,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:57:05,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:57:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:57:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:57:05,199 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 07:57:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:05,200 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:57:05,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:57:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 07:57:05,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:05,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:05,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:05,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 07:57:05,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:05,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725539798] [2020-09-25 07:57:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:09,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 07:57:09,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:09,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4057 [2020-09-25 07:57:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:09,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:09,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 07:57:09,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:09,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:09,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:09,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:09,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:09,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:09,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:09,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:09,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:09,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:09,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:09,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:09,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:09,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:57:09,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:09,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:09,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:09,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:09,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:09,589 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:09,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725539798] [2020-09-25 07:57:09,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:09,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:09,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597546188] [2020-09-25 07:57:09,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:09,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:09,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:09,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:09,603 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 07:57:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:11,487 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 07:57:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:11,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-09-25 07:57:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:11,493 INFO L225 Difference]: With dead ends: 698 [2020-09-25 07:57:11,494 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 07:57:11,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:11,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 07:57:11,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 07:57:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 07:57:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 07:57:11,533 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 124 [2020-09-25 07:57:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:11,534 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 07:57:11,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 07:57:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 07:57:11,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:11,541 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:11,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:11,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:11,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 07:57:11,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:11,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89667591] [2020-09-25 07:57:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:11,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:16,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:57:16,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4458 [2020-09-25 07:57:16,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:16,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:16,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:16,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 07:57:16,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:16,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:16,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:57:16,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:16,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:16,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:16,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:16,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 07:57:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:16,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:16,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89667591] [2020-09-25 07:57:16,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:16,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:57:16,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376082559] [2020-09-25 07:57:16,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:57:16,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:16,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:57:16,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:16,402 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 6 states. [2020-09-25 07:57:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:19,418 INFO L93 Difference]: Finished difference Result 1906 states and 2592 transitions. [2020-09-25 07:57:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:57:19,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-25 07:57:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:19,427 INFO L225 Difference]: With dead ends: 1906 [2020-09-25 07:57:19,427 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 07:57:19,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 07:57:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1168. [2020-09-25 07:57:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-09-25 07:57:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1566 transitions. [2020-09-25 07:57:19,477 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1566 transitions. Word has length 134 [2020-09-25 07:57:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:19,478 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1566 transitions. [2020-09-25 07:57:19,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:57:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1566 transitions. [2020-09-25 07:57:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:57:19,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:19,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:19,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:19,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:19,486 INFO L82 PathProgramCache]: Analyzing trace with hash 961850231, now seen corresponding path program 1 times [2020-09-25 07:57:19,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:19,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985210547] [2020-09-25 07:57:19,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:19,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:20,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:24,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 07:57:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 07:57:24,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:24,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 07:57:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:24,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:24,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:24,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:57:24,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:24,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:24,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:24,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:24,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:24,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:24,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:24,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 07:57:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 07:57:24,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:24,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:57:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:25,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985210547] [2020-09-25 07:57:25,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:25,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:25,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621516328] [2020-09-25 07:57:25,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:25,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:25,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:25,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:25,068 INFO L87 Difference]: Start difference. First operand 1168 states and 1566 transitions. Second operand 7 states. [2020-09-25 07:57:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:27,269 INFO L93 Difference]: Finished difference Result 2822 states and 3938 transitions. [2020-09-25 07:57:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:27,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 07:57:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:27,285 INFO L225 Difference]: With dead ends: 2822 [2020-09-25 07:57:27,285 INFO L226 Difference]: Without dead ends: 1669 [2020-09-25 07:57:27,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 07:57:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-09-25 07:57:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1485. [2020-09-25 07:57:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-09-25 07:57:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1966 transitions. [2020-09-25 07:57:27,362 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1966 transitions. Word has length 181 [2020-09-25 07:57:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:27,362 INFO L479 AbstractCegarLoop]: Abstraction has 1485 states and 1966 transitions. [2020-09-25 07:57:27,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1966 transitions. [2020-09-25 07:57:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 07:57:27,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:27,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:27,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:27,378 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 07:57:27,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:27,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563472040] [2020-09-25 07:57:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:32,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 07:57:32,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:32,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 07:57:32,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:32,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:32,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 07:57:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:32,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:32,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:32,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:57:32,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:32,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 07:57:32,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-25 07:57:32,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:32,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 07:57:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:33,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563472040] [2020-09-25 07:57:33,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:33,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:57:33,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621532552] [2020-09-25 07:57:33,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:33,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:33,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:33,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:33,179 INFO L87 Difference]: Start difference. First operand 1485 states and 1966 transitions. Second operand 8 states. [2020-09-25 07:57:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:36,025 INFO L93 Difference]: Finished difference Result 4523 states and 6351 transitions. [2020-09-25 07:57:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:57:36,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-09-25 07:57:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:36,045 INFO L225 Difference]: With dead ends: 4523 [2020-09-25 07:57:36,045 INFO L226 Difference]: Without dead ends: 3203 [2020-09-25 07:57:36,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:57:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2020-09-25 07:57:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 2881. [2020-09-25 07:57:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2881 states. [2020-09-25 07:57:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 3714 transitions. [2020-09-25 07:57:36,172 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 3714 transitions. Word has length 191 [2020-09-25 07:57:36,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:36,172 INFO L479 AbstractCegarLoop]: Abstraction has 2881 states and 3714 transitions. [2020-09-25 07:57:36,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 3714 transitions. [2020-09-25 07:57:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 07:57:36,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:36,182 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:36,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:36,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:36,183 INFO L82 PathProgramCache]: Analyzing trace with hash -580809659, now seen corresponding path program 1 times [2020-09-25 07:57:36,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:36,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127793818] [2020-09-25 07:57:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:41,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:41,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-09-25 07:57:41,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:41,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:57:41,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:41,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 07:57:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 07:57:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:41,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:57:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:41,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:41,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:41,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 07:57:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:41,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:57:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:57:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:41,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:41,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 07:57:41,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 07:57:41,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:41,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:41,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 07:57:41,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:41,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127793818] [2020-09-25 07:57:41,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:41,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:57:41,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486407494] [2020-09-25 07:57:41,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:41,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:41,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:41,889 INFO L87 Difference]: Start difference. First operand 2881 states and 3714 transitions. Second operand 7 states. [2020-09-25 07:57:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:44,386 INFO L93 Difference]: Finished difference Result 6345 states and 8495 transitions. [2020-09-25 07:57:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:57:44,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-09-25 07:57:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:44,406 INFO L225 Difference]: With dead ends: 6345 [2020-09-25 07:57:44,406 INFO L226 Difference]: Without dead ends: 2989 [2020-09-25 07:57:44,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:57:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2020-09-25 07:57:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2849. [2020-09-25 07:57:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2020-09-25 07:57:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 3538 transitions. [2020-09-25 07:57:44,501 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 3538 transitions. Word has length 285 [2020-09-25 07:57:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:44,502 INFO L479 AbstractCegarLoop]: Abstraction has 2849 states and 3538 transitions. [2020-09-25 07:57:44,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 3538 transitions. [2020-09-25 07:57:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-25 07:57:44,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:44,514 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:57:44,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:44,514 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:44,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:44,515 INFO L82 PathProgramCache]: Analyzing trace with hash 662556502, now seen corresponding path program 1 times [2020-09-25 07:57:44,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:44,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981902687] [2020-09-25 07:57:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:44,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking...