/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:21:27,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:21:27,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:21:27,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:21:27,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:21:27,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:21:27,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:21:27,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:21:27,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:21:27,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:21:27,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:21:27,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:21:27,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:21:27,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:21:27,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:21:27,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:21:27,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:21:27,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:21:27,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:21:27,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:21:27,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:21:27,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:21:27,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:21:27,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:21:27,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:21:27,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:21:27,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:21:27,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:21:27,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:21:27,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:21:27,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:21:27,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:21:27,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:21:27,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:21:27,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:21:27,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:21:27,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:21:27,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:21:27,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:21:27,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:21:27,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:21:27,345 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 13:21:27,394 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:21:27,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:21:27,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:21:27,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:21:27,397 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:21:27,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:21:27,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:21:27,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:21:27,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:21:27,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:21:27,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:21:27,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:21:27,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:21:27,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:21:27,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:21:27,401 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:21:27,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:21:27,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:21:27,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:21:27,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:21:27,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:21:27,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:27,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:21:27,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:21:27,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:21:27,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:21:27,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:21:27,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:21:27,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:21:27,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:21:27,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:21:27,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:21:27,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:21:27,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:21:27,898 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:21:27,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 13:21:28,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fddb3e11/6b44e8e8455740b2826cd48efb8c5243/FLAGa495568ca [2020-09-25 13:21:28,555 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:21:28,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 13:21:28,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fddb3e11/6b44e8e8455740b2826cd48efb8c5243/FLAGa495568ca [2020-09-25 13:21:28,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fddb3e11/6b44e8e8455740b2826cd48efb8c5243 [2020-09-25 13:21:28,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:21:28,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:21:28,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:28,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:21:28,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:21:28,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:28, skipping insertion in model container [2020-09-25 13:21:28,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:28" (1/1) ... [2020-09-25 13:21:28,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:21:28,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:21:29,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:29,190 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:21:29,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:29,230 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:21:29,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29 WrapperNode [2020-09-25 13:21:29,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:29,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:21:29,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:21:29,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:21:29,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (1/1) ... [2020-09-25 13:21:29,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:21:29,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:21:29,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:21:29,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:21:29,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (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 13:21:29,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:21:29,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:21:29,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 13:21:29,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:21:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:21:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:21:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 13:21:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:21:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:21:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:21:29,656 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:21:29,656 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:21:29,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:29 BoogieIcfgContainer [2020-09-25 13:21:29,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:21:29,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:21:29,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:21:29,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:21:29,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:21:28" (1/3) ... [2020-09-25 13:21:29,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289f063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:29, skipping insertion in model container [2020-09-25 13:21:29,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:29" (2/3) ... [2020-09-25 13:21:29,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289f063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:29, skipping insertion in model container [2020-09-25 13:21:29,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:29" (3/3) ... [2020-09-25 13:21:29,674 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-09-25 13:21:29,690 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:21:29,704 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:21:29,763 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:21:29,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:21:29,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:21:29,821 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:21:29,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:21:29,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:21:29,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:21:29,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:21:29,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:21:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 13:21:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 13:21:29,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:29,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:29,854 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 13:21:29,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:29,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48331228] [2020-09-25 13:21:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:21:30,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 13:21:30,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:30,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:21:30,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:21:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:30,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:21:30,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:30,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:30,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:21:30,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,298 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 13:21:30,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48331228] [2020-09-25 13:21:30,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:30,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:21:30,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481000613] [2020-09-25 13:21:30,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:21:30,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:21:30,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:21:30,333 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 13:21:30,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:30,471 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 13:21:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:21:30,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 13:21:30,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:30,495 INFO L225 Difference]: With dead ends: 48 [2020-09-25 13:21:30,496 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 13:21:30,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 13:21:30,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 13:21:30,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 13:21:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 13:21:30,555 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 13:21:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:30,556 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 13:21:30,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:21:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 13:21:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:21:30,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:30,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:30,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:21:30,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:30,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 13:21:30,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:30,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523124647] [2020-09-25 13:21:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:21:30,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 13:21:30,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:30,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:21:30,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:30,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:30,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:21:30,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:30,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:30,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:30,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:21:30,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:30,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:30,787 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 13:21:30,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523124647] [2020-09-25 13:21:30,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:30,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:21:30,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049446508] [2020-09-25 13:21:30,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:21:30,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:30,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:21:30,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:21:30,792 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 13:21:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:30,916 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 13:21:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:21:30,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 13:21:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:30,918 INFO L225 Difference]: With dead ends: 38 [2020-09-25 13:21:30,919 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 13:21:30,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:21:30,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 13:21:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 13:21:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 13:21:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 13:21:30,929 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 13:21:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:30,930 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 13:21:30,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:21:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 13:21:30,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:21:30,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:30,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 13:21:30,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:21:30,933 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 13:21:30,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:30,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322639529] [2020-09-25 13:21:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:21:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-25 13:21:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:21:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:31,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:31,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:31,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:31,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:31,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 13:21:31,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:31,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:21:31,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:31,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:31,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:31,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:31,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:31,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:31,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:21:31,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:31,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:21:31,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322639529] [2020-09-25 13:21:31,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:31,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:21:31,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032361982] [2020-09-25 13:21:31,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:21:31,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:31,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:21:31,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:21:31,887 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 13:21:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:32,037 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 13:21:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:32,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:21:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:32,041 INFO L225 Difference]: With dead ends: 68 [2020-09-25 13:21:32,041 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:21:32,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:21:32,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:21:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 13:21:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 13:21:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 13:21:32,062 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 13:21:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:32,063 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 13:21:32,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:21:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 13:21:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 13:21:32,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:32,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 13:21:32,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:21:32,070 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:32,072 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 13:21:32,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:32,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177679250] [2020-09-25 13:21:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:21:32,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-09-25 13:21:32,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:21:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:21:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:32,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:32,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:32,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:32,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 13:21:32,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:32,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:32,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:21:32,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:32,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:32,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:32,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:21:32,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:32,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:21:33,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177679250] [2020-09-25 13:21:33,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:33,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:21:33,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137978342] [2020-09-25 13:21:33,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:21:33,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:33,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:21:33,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:21:33,011 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 13:21:33,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:33,179 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-09-25 13:21:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:21:33,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 13:21:33,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:33,182 INFO L225 Difference]: With dead ends: 56 [2020-09-25 13:21:33,183 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 13:21:33,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:21:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 13:21:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-09-25 13:21:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 13:21:33,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-09-25 13:21:33,194 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 36 [2020-09-25 13:21:33,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:33,195 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-09-25 13:21:33,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:21:33,195 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-09-25 13:21:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 13:21:33,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:33,199 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:33,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:21:33,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:33,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1801616585, now seen corresponding path program 2 times [2020-09-25 13:21:33,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:33,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338275626] [2020-09-25 13:21:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:38,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 13:21:38,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:21:38,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:21:38,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:38,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:38,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:21:38,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:21:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:21:38,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:38,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:38,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:38,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:38,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:38,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:38,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:21:43,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:21:43,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:21:43,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:21:43,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:21:43,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:43,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:43,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 13:21:43,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:43,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:21:43,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:43,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:43,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:43,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:21:43,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:43,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:43,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:43,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:43,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:43,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:21:45,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:21:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2017 [2020-09-25 13:21:45,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:45,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:21:45,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:21:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:45,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:45,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 13:21:45,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:45,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:45,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:45,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:45,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:45,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:21:45,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:45,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:45,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:45,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:45,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:45,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:45,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:45,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:45,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:45,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:45,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:45,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 59 proven. 65 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 13:21:45,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338275626] [2020-09-25 13:21:45,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:45,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:21:45,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927368219] [2020-09-25 13:21:45,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:21:45,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:45,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:21:45,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:21:45,772 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 10 states. [2020-09-25 13:21:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:46,170 INFO L93 Difference]: Finished difference Result 98 states and 143 transitions. [2020-09-25 13:21:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:21:46,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 13:21:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:46,174 INFO L225 Difference]: With dead ends: 98 [2020-09-25 13:21:46,175 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 13:21:46,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:21:46,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 13:21:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2020-09-25 13:21:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 13:21:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-09-25 13:21:46,209 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 87 [2020-09-25 13:21:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:46,209 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-09-25 13:21:46,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:21:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-09-25 13:21:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 13:21:46,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:46,216 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:46,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:21:46,217 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:46,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1419436827, now seen corresponding path program 1 times [2020-09-25 13:21:46,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:46,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106146321] [2020-09-25 13:21:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:47,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 13:21:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:21:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:21:51,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:51,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:21:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:21:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:51,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:51,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:51,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:51,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:51,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:51,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:51,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:51,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:21:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 13:21:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:21:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:21:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:21:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:21:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:21:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:56,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 13:21:56,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:21:56,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:21:56,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:56,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:56,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:56,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:56,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:56,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:56,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:21:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:56,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:22:01,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:22:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:22:01,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:22:01,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:01,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:01,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:01,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:01,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:22:01,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:01,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:22:01,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:01,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:01,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:01,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:01,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:01,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:01,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:01,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:22:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:01,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:01,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:01,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:01,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:01,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:01,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:01,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:01,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:01,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:01,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 60 proven. 77 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-09-25 13:22:01,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106146321] [2020-09-25 13:22:01,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:01,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:22:01,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512437454] [2020-09-25 13:22:01,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:22:01,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:01,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:22:01,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:01,955 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 9 states. [2020-09-25 13:22:02,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:02,179 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2020-09-25 13:22:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:22:02,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-09-25 13:22:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:02,182 INFO L225 Difference]: With dead ends: 103 [2020-09-25 13:22:02,182 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 13:22:02,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:22:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 13:22:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 13:22:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 13:22:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 13:22:02,192 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 91 [2020-09-25 13:22:02,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:02,193 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 13:22:02,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:22:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 13:22:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 13:22:02,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:02,195 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:02,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:22:02,196 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:02,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 3 times [2020-09-25 13:22:02,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:02,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351847811] [2020-09-25 13:22:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 13:22:07,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 13:22:07,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 13:22:07,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 13:22:07,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:22:07,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:07,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:07,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:07,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:07,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:07,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:07,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:22:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:12,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 13:22:12,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:12,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:13,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1395 [2020-09-25 13:22:13,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:22:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:22:13,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:13,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:13,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:13,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:13,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:13,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:13,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:13,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:13,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:22:13,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:13,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:13,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:13,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:22:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:13,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:14,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:22:18,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 13:22:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:22:18,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 13:22:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:18,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:22:18,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:22:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:18,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:18,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:18,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:18,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:18,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:18,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:18,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:18,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:18,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:18,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:18,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:18,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:22:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:18,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:18,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:22:18,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 162 proven. 100 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2020-09-25 13:22:19,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351847811] [2020-09-25 13:22:19,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:19,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:22:19,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832335330] [2020-09-25 13:22:19,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:22:19,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:22:19,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:19,056 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 10 states. [2020-09-25 13:22:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:19,421 INFO L93 Difference]: Finished difference Result 129 states and 181 transitions. [2020-09-25 13:22:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:22:19,421 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2020-09-25 13:22:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:19,426 INFO L225 Difference]: With dead ends: 129 [2020-09-25 13:22:19,426 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 13:22:19,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:22:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 13:22:19,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2020-09-25 13:22:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 13:22:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2020-09-25 13:22:19,439 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 125 [2020-09-25 13:22:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:19,440 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2020-09-25 13:22:19,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:22:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2020-09-25 13:22:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 13:22:19,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:19,442 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:19,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:22:19,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:19,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1005193447, now seen corresponding path program 4 times [2020-09-25 13:22:19,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:19,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130465240] [2020-09-25 13:22:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:21,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking...