/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/sum_10x0-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:11:37,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:11:37,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:11:37,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:11:37,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:11:37,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:11:37,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:11:37,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:11:37,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:11:37,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:11:37,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:11:37,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:11:37,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:11:37,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:11:37,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:11:37,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:11:37,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:11:37,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:11:37,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:11:37,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:11:37,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:11:37,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:11:37,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:11:37,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:11:37,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:11:37,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:11:37,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:11:37,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:11:37,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:11:37,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:11:37,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:11:37,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:11:37,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:11:37,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:11:37,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:11:37,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:11:37,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:11:37,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:11:37,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:11:37,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:11:37,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:11:37,457 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 [2020-10-29 12:11:37,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:11:37,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:11:37,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:11:37,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:11:37,508 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:11:37,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:11:37,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:11:37,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:11:37,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:11:37,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:11:37,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:11:37,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:11:37,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:11:37,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:11:37,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:11:37,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:11:37,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:11:37,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:11:37,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:11:37,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:11:37,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:11:37,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:11:37,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:11:37,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:11:37,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:11:37,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:11:37,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:11:37,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:11:37,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:11:37,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:11:37,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:11:37,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:11:37,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:11:37,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:11:37,975 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:11:37,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_10x0-2.c [2020-10-29 12:11:38,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f959f6fc5/0fb6435581c64cfd80482d3a8987932c/FLAG701cd14e3 [2020-10-29 12:11:38,641 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:11:38,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_10x0-2.c [2020-10-29 12:11:38,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f959f6fc5/0fb6435581c64cfd80482d3a8987932c/FLAG701cd14e3 [2020-10-29 12:11:39,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f959f6fc5/0fb6435581c64cfd80482d3a8987932c [2020-10-29 12:11:39,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:11:39,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:11:39,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:11:39,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:11:39,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:11:39,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74700c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39, skipping insertion in model container [2020-10-29 12:11:39,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:11:39,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:11:39,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:11:39,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:11:39,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:11:39,357 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:11:39,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39 WrapperNode [2020-10-29 12:11:39,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:11:39,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:11:39,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:11:39,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:11:39,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (1/1) ... [2020-10-29 12:11:39,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:11:39,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:11:39,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:11:39,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:11:39,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (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 [2020-10-29 12:11:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:11:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:11:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:11:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-29 12:11:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:11:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:11:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:11:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:11:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:11:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-29 12:11:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:11:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:11:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:11:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:11:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:11:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:11:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:11:39,777 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:11:39,777 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:11:39,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:11:39 BoogieIcfgContainer [2020-10-29 12:11:39,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:11:39,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:11:39,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:11:39,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:11:39,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:11:39" (1/3) ... [2020-10-29 12:11:39,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:11:39, skipping insertion in model container [2020-10-29 12:11:39,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:11:39" (2/3) ... [2020-10-29 12:11:39,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570413f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:11:39, skipping insertion in model container [2020-10-29 12:11:39,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:11:39" (3/3) ... [2020-10-29 12:11:39,789 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_10x0-2.c [2020-10-29 12:11:39,804 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:11:39,811 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:11:39,829 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:11:39,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:11:39,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:11:39,877 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:11:39,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:11:39,877 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:11:39,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:11:39,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:11:39,878 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:11:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 12:11:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 12:11:39,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:39,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:39,932 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:39,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2012080153, now seen corresponding path program 1 times [2020-10-29 12:11:39,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:39,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213361512] [2020-10-29 12:11:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:40,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:40,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 12:11:40,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:40,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:11:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:11:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:11:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:40,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:40,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:11:40,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:40,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 12:11:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:40,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:40,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:40,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 12:11:40,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:40,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:11:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:11:40,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:11:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:11:40,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213361512] [2020-10-29 12:11:40,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:11:40,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:11:40,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932146909] [2020-10-29 12:11:40,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:11:40,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:40,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:11:40,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:11:40,770 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-29 12:11:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:41,036 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-29 12:11:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:11:41,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 12:11:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:41,049 INFO L225 Difference]: With dead ends: 36 [2020-10-29 12:11:41,050 INFO L226 Difference]: Without dead ends: 20 [2020-10-29 12:11:41,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:11:41,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-29 12:11:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-29 12:11:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-29 12:11:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-29 12:11:41,113 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-29 12:11:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:41,113 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-29 12:11:41,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:11:41,114 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-29 12:11:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 12:11:41,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:41,117 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:41,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:11:41,117 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:41,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:41,119 INFO L82 PathProgramCache]: Analyzing trace with hash -292229313, now seen corresponding path program 1 times [2020-10-29 12:11:41,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:41,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507471169] [2020-10-29 12:11:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:41,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:41,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:41,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:41,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 12:11:41,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:41,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:11:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:41,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:11:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:41,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:41,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:41,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:11:41,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:41,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:41,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:41,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:41,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:41,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:11:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:41,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 12:11:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:41,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:11:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:41,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:41,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:41,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:41,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:41,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:11:41,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:41,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 12:11:41,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507471169] [2020-10-29 12:11:41,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:41,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 12:11:41,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170060319] [2020-10-29 12:11:41,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:11:41,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:41,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:11:41,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:11:41,709 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 7 states. [2020-10-29 12:11:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:41,933 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-29 12:11:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 12:11:41,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-29 12:11:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:41,935 INFO L225 Difference]: With dead ends: 28 [2020-10-29 12:11:41,935 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 12:11:41,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:11:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 12:11:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 12:11:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 12:11:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-29 12:11:41,947 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-29 12:11:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:41,947 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-29 12:11:41,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:11:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-29 12:11:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 12:11:41,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:41,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:41,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:11:41,949 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1887732007, now seen corresponding path program 2 times [2020-10-29 12:11:41,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:41,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650785630] [2020-10-29 12:11:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:42,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:42,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:42,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:42,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 12:11:42,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:42,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:11:42,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:42,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 12:11:42,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:42,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:42,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:42,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:42,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:11:42,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:42,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:42,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:42,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:42,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:42,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:42,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:42,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:42,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 12:11:42,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:42,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:42,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:11:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:42,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:11:42,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:42,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 12:11:42,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:42,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:42,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:42,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:42,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:11:42,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:42,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:42,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:42,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:11:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 12:11:42,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650785630] [2020-10-29 12:11:42,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:42,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 12:11:42,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865558275] [2020-10-29 12:11:42,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:11:42,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:42,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:11:42,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:11:42,549 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 9 states. [2020-10-29 12:11:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:42,789 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-29 12:11:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:11:42,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-29 12:11:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:42,790 INFO L225 Difference]: With dead ends: 31 [2020-10-29 12:11:42,791 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 12:11:42,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:11:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 12:11:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 12:11:42,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 12:11:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-29 12:11:42,800 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-10-29 12:11:42,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:42,801 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-29 12:11:42,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:11:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-29 12:11:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 12:11:42,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:42,802 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:42,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:11:42,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:42,803 INFO L82 PathProgramCache]: Analyzing trace with hash 779050623, now seen corresponding path program 3 times [2020-10-29 12:11:42,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:42,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184954485] [2020-10-29 12:11:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:43,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:43,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:43,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:43,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 12:11:43,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:43,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:11:43,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:11:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:11:43,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:43,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:43,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:11:43,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:43,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:43,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:43,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:43,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:43,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 12:11:43,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:43,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:11:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 12:11:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:43,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:43,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:43,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:43,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 12:11:43,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:43,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:43,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:43,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:43,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:43,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 12:11:43,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:43,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:43,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:43,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:43,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:43,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:11:43,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:43,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:43,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 12:11:43,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184954485] [2020-10-29 12:11:43,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:43,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 12:11:43,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332375167] [2020-10-29 12:11:43,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:11:43,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:43,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:11:43,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:11:43,407 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-10-29 12:11:43,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:43,748 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-29 12:11:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:11:43,749 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-29 12:11:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:43,750 INFO L225 Difference]: With dead ends: 34 [2020-10-29 12:11:43,750 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 12:11:43,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:11:43,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 12:11:43,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 12:11:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 12:11:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-29 12:11:43,768 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 33 [2020-10-29 12:11:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:43,769 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-29 12:11:43,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:11:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-29 12:11:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 12:11:43,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:43,772 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:43,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:11:43,773 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:43,774 INFO L82 PathProgramCache]: Analyzing trace with hash -184104345, now seen corresponding path program 4 times [2020-10-29 12:11:43,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:43,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770852170] [2020-10-29 12:11:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:43,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:44,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:44,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:44,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 12:11:44,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:44,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:11:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:44,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 12:11:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:44,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:44,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:44,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:11:44,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:44,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:44,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:44,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:44,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:44,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 12:11:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:44,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:44,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 12:11:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 12:11:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:44,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:44,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:44,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:44,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:44,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:44,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 12:11:44,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:44,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:44,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:44,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:11:44,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:44,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:44,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:44,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 12:11:44,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:44,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:44,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:44,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:44,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:44,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:11:44,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:44,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:44,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:44,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:44,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:44,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:11:44,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:44,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:44,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:44,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:11:44,768 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 12:11:44,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770852170] [2020-10-29 12:11:44,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:44,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 12:11:44,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630572491] [2020-10-29 12:11:44,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:11:44,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:44,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:11:44,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:11:44,772 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2020-10-29 12:11:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:45,315 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-29 12:11:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:11:45,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-29 12:11:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:45,317 INFO L225 Difference]: With dead ends: 37 [2020-10-29 12:11:45,317 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 12:11:45,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:11:45,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 12:11:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-29 12:11:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 12:11:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-29 12:11:45,333 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2020-10-29 12:11:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:45,334 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-29 12:11:45,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:11:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-29 12:11:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 12:11:45,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:45,338 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:45,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:11:45,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:45,340 INFO L82 PathProgramCache]: Analyzing trace with hash -6214209, now seen corresponding path program 5 times [2020-10-29 12:11:45,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:45,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123283521] [2020-10-29 12:11:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:45,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:45,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:45,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:45,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 12:11:45,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:45,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:11:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:45,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:11:45,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:45,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:45,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:45,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:45,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:45,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:45,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:11:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:45,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:45,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:45,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 12:11:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:45,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 12:11:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:11:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:45,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:46,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:46,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:46,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 12:11:46,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:46,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:11:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:46,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:46,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:46,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 12:11:46,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:46,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:11:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:46,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:46,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:46,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 12:11:46,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:46,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:46,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:46,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:46,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:11:46,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:46,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:46,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:46,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:46,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:46,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:11:46,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:46,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:46,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:46,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 12:11:46,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123283521] [2020-10-29 12:11:46,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:46,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 12:11:46,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088823027] [2020-10-29 12:11:46,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:11:46,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:46,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:11:46,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:11:46,419 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2020-10-29 12:11:46,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:46,868 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-29 12:11:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 12:11:46,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-29 12:11:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:46,870 INFO L225 Difference]: With dead ends: 40 [2020-10-29 12:11:46,870 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 12:11:46,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:11:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 12:11:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-29 12:11:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 12:11:46,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-29 12:11:46,878 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 45 [2020-10-29 12:11:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:46,879 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-29 12:11:46,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:11:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-29 12:11:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 12:11:46,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:46,880 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:46,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:11:46,881 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2097613913, now seen corresponding path program 6 times [2020-10-29 12:11:46,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:46,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046296064] [2020-10-29 12:11:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:47,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:47,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:11:47,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:47,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-29 12:11:47,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:47,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:11:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:47,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:11:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 25 [2020-10-29 12:11:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:11:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:47,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:47,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:47,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 12:11:47,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:47,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 12:11:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:11:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:47,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:47,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:47,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:47,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 12:11:47,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:47,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:11:47,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:47,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:47,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:47,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 12:11:47,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:47,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:11:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:47,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:47,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:47,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 12:11:47,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:47,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:11:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:48,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:48,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:48,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 12:11:48,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:48,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:48,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:48,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:48,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:48,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 12:11:48,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:48,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:48,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:48,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:48,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:48,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:48,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:11:48,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:48,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:48,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:48,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 2 proven. 73 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-29 12:11:48,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046296064] [2020-10-29 12:11:48,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:48,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 12:11:48,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229886654] [2020-10-29 12:11:48,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:11:48,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:48,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:11:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:11:48,143 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2020-10-29 12:11:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:48,705 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-10-29 12:11:48,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 12:11:48,705 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-29 12:11:48,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:48,707 INFO L225 Difference]: With dead ends: 43 [2020-10-29 12:11:48,707 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 12:11:48,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-10-29 12:11:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 12:11:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-29 12:11:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 12:11:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-29 12:11:48,721 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 51 [2020-10-29 12:11:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:48,722 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-29 12:11:48,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:11:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-29 12:11:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 12:11:48,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:48,724 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:48,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:11:48,724 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:48,726 INFO L82 PathProgramCache]: Analyzing trace with hash -437625601, now seen corresponding path program 7 times [2020-10-29 12:11:48,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:48,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95597165] [2020-10-29 12:11:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:49,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:49,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 12:11:49,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-29 12:11:49,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:49,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:11:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:49,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 12:11:49,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:49,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:49,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:49,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:49,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:11:49,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:49,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:49,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:49,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:49,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:49,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 12:11:49,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:49,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 12:11:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 12:11:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:49,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:49,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 12:11:49,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:49,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:11:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:11:49,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:49,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:49,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:49,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:49,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 12:11:49,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:49,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:49,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:49,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:11:49,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:49,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:49,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 12:11:49,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:49,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:11:49,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:50,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:50,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:50,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 12:11:50,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:50,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:50,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:11:50,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:50,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:50,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:50,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:50,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:50,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:11:50,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:50,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:50,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:50,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:50,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:50,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:11:50,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:50,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:50,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:50,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:50,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:50,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:50,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:11:50,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:50,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 23 proven. 81 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-29 12:11:50,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95597165] [2020-10-29 12:11:50,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:50,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 12:11:50,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100266332] [2020-10-29 12:11:50,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:11:50,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:50,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:11:50,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:11:50,298 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 14 states. [2020-10-29 12:11:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:50,888 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-29 12:11:50,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 12:11:50,891 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-29 12:11:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:50,892 INFO L225 Difference]: With dead ends: 46 [2020-10-29 12:11:50,893 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 12:11:50,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-29 12:11:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 12:11:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 12:11:50,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 12:11:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-10-29 12:11:50,910 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 57 [2020-10-29 12:11:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:50,911 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-10-29 12:11:50,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:11:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-10-29 12:11:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 12:11:50,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:50,915 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:50,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:11:50,916 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:50,916 INFO L82 PathProgramCache]: Analyzing trace with hash 331021543, now seen corresponding path program 8 times [2020-10-29 12:11:50,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:50,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140203561] [2020-10-29 12:11:50,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:50,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:51,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 12:11:51,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 12:11:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:51,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:11:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 12:11:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:51,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:51,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:51,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:11:51,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:51,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:51,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:51,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:51,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:51,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:11:51,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-29 12:11:51,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:51,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 12:11:51,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:51,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 12:11:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:51,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:52,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-29 12:11:52,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:11:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:11:52,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:52,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 12:11:52,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:11:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:11:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:52,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 12:11:52,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:11:52,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:52,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 12:11:52,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:11:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:52,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:52,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 12:11:52,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:11:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:52,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:52,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:11:52,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:52,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:52,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:52,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:11:52,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:52,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:52,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:52,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:11:52,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:52,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 12 proven. 125 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 12:11:53,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140203561] [2020-10-29 12:11:53,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:53,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:11:53,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085367429] [2020-10-29 12:11:53,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:11:53,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:53,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:11:53,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:11:53,021 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 16 states. [2020-10-29 12:11:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:53,565 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-29 12:11:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:11:53,565 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-10-29 12:11:53,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:53,567 INFO L225 Difference]: With dead ends: 49 [2020-10-29 12:11:53,567 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 12:11:53,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=481, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:11:53,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 12:11:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-29 12:11:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 12:11:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-29 12:11:53,575 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 63 [2020-10-29 12:11:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:53,576 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-29 12:11:53,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:11:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-29 12:11:53,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 12:11:53,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:53,577 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:53,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:11:53,578 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:53,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1458901953, now seen corresponding path program 9 times [2020-10-29 12:11:53,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:53,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842263871] [2020-10-29 12:11:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 12:11:54,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-29 12:11:54,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:11:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:11:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 12:11:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:11:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:11:54,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:11:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:11:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:11:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:11:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 12:11:54,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-29 12:11:54,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 12:11:54,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:11:54,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 12:11:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:54,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:54,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 12:11:54,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 12:11:54,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:54,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 12:11:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:54,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:11:54,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:54,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 12:11:55,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 12:11:55,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 12:11:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:11:55,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:55,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:55,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 12:11:55,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 12:11:55,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 12:11:55,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:11:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:55,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:11:55,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 12:11:55,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 12:11:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 12:11:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:55,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 12:11:55,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 12:11:55,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 12:11:55,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:11:55,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:11:55,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 12:11:55,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 12:11:55,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 12:11:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 12:11:55,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:55,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 12:11:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:11:55,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:11:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:11:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:11:55,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:11:55,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:11:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:11:55,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 12:11:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:11:55,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:11:55,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:11:55,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:11:55,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:11:55,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:11:55,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:11:55,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:11:55,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:11:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:11:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:11:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:11:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 28 proven. 142 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 12:11:55,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842263871] [2020-10-29 12:11:55,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 12:11:55,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 12:11:55,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710757557] [2020-10-29 12:11:55,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 12:11:55,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:11:55,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 12:11:55,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-29 12:11:55,920 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 16 states. [2020-10-29 12:11:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:11:56,610 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-10-29 12:11:56,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 12:11:56,611 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-10-29 12:11:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:11:56,613 INFO L225 Difference]: With dead ends: 52 [2020-10-29 12:11:56,616 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 12:11:56,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2020-10-29 12:11:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 12:11:56,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-29 12:11:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 12:11:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-29 12:11:56,633 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 69 [2020-10-29 12:11:56,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:11:56,634 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-29 12:11:56,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 12:11:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-29 12:11:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 12:11:56,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:11:56,636 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:11:56,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:11:56,636 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:11:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:11:56,638 INFO L82 PathProgramCache]: Analyzing trace with hash 749528615, now seen corresponding path program 10 times [2020-10-29 12:11:56,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:11:56,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938800449] [2020-10-29 12:11:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:11:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 12:11:56,666 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 12:11:56,666 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 12:11:56,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:11:56,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 12:11:56 BoogieIcfgContainer [2020-10-29 12:11:56,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 12:11:56,702 INFO L168 Benchmark]: Toolchain (without parser) took 17678.98 ms. Allocated memory was 154.1 MB in the beginning and 388.0 MB in the end (delta: 233.8 MB). Free memory was 111.8 MB in the beginning and 309.8 MB in the end (delta: -198.0 MB). Peak memory consumption was 36.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:56,703 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 12:11:56,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.73 ms. Allocated memory is still 154.1 MB. Free memory was 111.0 MB in the beginning and 130.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:56,708 INFO L168 Benchmark]: Boogie Preprocessor took 34.55 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 128.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:56,709 INFO L168 Benchmark]: RCFGBuilder took 384.61 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 125.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:56,710 INFO L168 Benchmark]: TraceAbstraction took 16917.23 ms. Allocated memory was 154.1 MB in the beginning and 388.0 MB in the end (delta: 233.8 MB). Free memory was 125.8 MB in the beginning and 309.8 MB in the end (delta: -184.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2020-10-29 12:11:56,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 154.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 327.73 ms. Allocated memory is still 154.1 MB. Free memory was 111.0 MB in the beginning and 130.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.55 ms. Allocated memory is still 154.1 MB. Free memory was 130.0 MB in the beginning and 128.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 384.61 ms. Allocated memory is still 154.1 MB. Free memory was 128.5 MB in the beginning and 125.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16917.23 ms. Allocated memory was 154.1 MB in the beginning and 388.0 MB in the end (delta: 233.8 MB). Free memory was 125.8 MB in the beginning and 309.8 MB in the end (delta: -184.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int a = 10; [L15] int b = 0; [L16] CALL, EXPR sum(a, b) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND TRUE n <= 0 [L7] return m + n; [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L18] CALL reach_error() [L3] __assert_fail("0", "sum_10x0-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.8s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 397 SDslu, 272 SDs, 0 SdLazy, 671 SolverSat, 235 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 290 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 495 NumberOfCodeBlocks, 495 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 59442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 367/900 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...